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作者简介:

谢安然(1994-),硕士研究生,研究方向为中药活性成分及质量控制,(E-mail)594879739@qq.com。

通讯作者:

侯小涛,博士,教授,研究方向为中药活性成分与质量控制,(E-mail)xthou@126.com。

中图分类号:Q946

文献标识码:A

文章编号:1000-3142(2022)11-1884-08

DOI:10.11931/guihaia.gxzw202104040

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目录contents

    摘要

    甘蔗是糖类加工产业主要的经济作物,甘蔗叶作为广西特色瑶药,在广西民间及瑶族地区具有悠久的药用历史。该课题组前期发现甘蔗叶乙酸乙酯部位具有抗肿瘤活性,为进一步明确其乙酸乙酯部位的化学成分,该文采用硅胶柱色谱、Sephadex LH-20柱色谱、制备型高效液相色谱等多种分离纯化的方法对甘蔗叶乙酸乙酯部位进行研究。结果表明:从甘蔗叶乙酸乙酯萃取部位分离且鉴定了20个化合物,分别为原儿茶醛(1)、3,4-二羟基-苯甲酸甲酯(2)、3, 4-二羟基苯甲酸(3)、3-羟基-4-甲氧基苯甲酸(4)、对羟基苯甲酸(5)、对羟基苯甲醛(6)、对羟基肉桂酸(7)、丁香酸(8)、3, 5-二甲氧基对苯二酚(9)、1-hydroxy-benzoyl-4-O-α-L-rhamnopyranoside(10)、对羟基苯甲酸-β-D-吡喃葡萄糖酯苷(11)、槲皮素(12)、小麦黄素(13)、异柽柳素(14)、异鼠李素(15)、5, 3′, 4′-三羟基-7-甲氧基二氢黄酮(16)、7-O-甲基圣草酚(17)、[(E)-4-(1S,3R,4R)-1-hydroxy-4,5,5-trimethyl-7-oxabicyclo [4.1.0]heptan-1-yl]but-1-en-3-o-ne(18)、blumenol A(19)和胸腺嘧啶脱氧核苷(20)。其中,化合物1-469-1113-161820均为首次从甘蔗叶中分离得到。该研究结果为日后甘蔗叶乙酸乙酯部分的进一步开发提供了依据

    Abstract

    Saccharum officinarum is the main cash crop in sugar processing industry, and its leaves are characteristic Yao medicine in Guangxi with a long history. Our recent study showed that its ethyl acetate extract was partly responsible for its in vitro anti-tumor activity. In order to clarify the chemical constituents of this part, the modern separation and purification techniques, such as silica gel column chromatography, Sephadex LH-20 column chromatography, and semi-preparative high-performance liquid chromatography were used to identify the structures of the isolates by their physicochemical properties and modern spectral analysis. The results were as follows: Twenty compounds were all isolated and identified as 3, 4-dihydroxybenzaldehyde (1), methyl 3, 4-dihydroxy-benzoate (2), 3, 4-dihydroxy-benzoic acid (3), 3-hydroxy-4-methoxybenzoic acid (4), p-hydroxy-benzoic acid (5), p-hydroxybenzyl aldehyde (6), p-hydroxy-cinnamic acid (7), syringic acid (8), 3, 5-dihydroxy-hydroquinone (9),1-hydroxy-benzoyl-4-O-α-L-rhamnopyranoside(10), p-hydroxy-benzoyl-β-D-glucopyranoside (11), quercetin (12), tricin (13), tamarixetin (14),isorhamnetin (15), 5, 3′, 4′-trihydroxy-7-methoxy-flavanone (16), 7-O-Methyleriodictyol (17), [(E)-4-(1S,3R,4R)-1-hydroxy-4,5,5-trimethyl-7-oxabicyclo [4.1.0]heptan-1-yl]but-1-en-3-o-ne(18), blumenol A (19) and thymidine (20), respectively. Compounds 1-4, 6, 9-11, 13-16, 18 and 20 were isolated and identified from this plant for the first time. The results provide some basis for its further development.

  • 甘蔗(Saccharum officinarum)为禾本科黍亚科草本植物,主产于热带和亚热带地区,全世界有一百多个国家出产甘蔗,其中产量最高的是巴西、印度和中国。在我国,甘蔗主要分布于江西、湖南、福建、广东、广西、四川和云南等地,是糖类加工产业的主要经济作物。同时,甘蔗产业是广西主要农业支柱产业,甘蔗种植面积连续多年稳居全国第一,蔗糖总产量占全国总产量在60%以上。甘蔗叶为甘蔗的叶,是甘蔗收获和加工过程中的主要废弃物和副产物,一般处理方法为就地焚烧或直接丢弃在田埂和河道中,造成了严重的资源浪费和环境污染。随着甘蔗种植规模的不断扩大,如何对甘蔗叶进行有效的资源回收再利用是近年来亟须解决的问题。

  • 甘蔗叶在广西民间及瑶族地区具有悠久的药用历史,在瑶医药记载中,甘蔗叶主要用于治疗盗汗、消渴症以及汗证。但是,甘蔗叶现多用于饲料加工或粉碎还田,药用价值有待进一步开发。近年来的研究发现,甘蔗叶中主要含有有糖、多糖、苷类、黄酮类和酚类等成分(Jian et al.,2014; 何耀涛等,2016; 潘王芸等,2019; 张金玲等,2019)。药理活性研究表明,甘蔗叶具有抑菌、降血糖、抗炎等作用(侯小涛等,2011; Borsen et al.,2011; 江恒,2012; 侯小涛等,2013; 韦玮等,2018)。

  • 为了深入研究甘蔗叶的化学成分,本研究运用传统分离技术对甘蔗叶化学成分进行分离,并采用现代谱学方法及比对文献数据进行结构鉴定,从甘蔗叶70%乙醇提取物的乙酸乙酯萃取部位分离得到20个化合物(图1),包括酚酸、黄酮、倍半萜、生物碱类化合物。其中,化合物1-469-1113-161820均为首次从甘蔗叶中分离鉴定得到。

  • 1 仪器与材料

  • 1.1 药材

  • 甘蔗叶于2019年12月采自广西南宁市武鸣甘蔗种植区。经广西中医药大学韦松基教授鉴定为禾本科植物甘蔗(Saccharum officinarum)的叶。标本(20191225-1)存放于广西中医药大学广西中药药效重点实验室。

  • 1.2 仪器和试剂

  • 1252型半制备高效液相色谱仪(Pre-HPLC,美国Waters公司); Q-Tof MicroTM型质谱仪(美国Waters 公司); Inova-600 型超导核磁共振波谱仪(美国Varian 公司); 2695型高效液相色谱仪(美国Waters公司); SB25-12D超声波清洗机(宁波新芝生物科技股份有限公司); UPK-I-10T优普系列超纯水器(四川优普超纯科技有限公司); SHZ-III型循环水真空泵(上海亚荣生化仪器厂); 柱层析硅胶(100~200目、200~300目,青岛海洋化工厂); 柱色谱用硅胶(200~300 目)及薄层色谱用GF254硅胶预制板(青岛海洋化工厂); Sephadex LH-20葡聚糖凝胶(瑞典 Amer-sham Pharmacia公司); 00G-4252-P0-AX制备色谱柱(250 mm×21.2 mm,5 μm,美国Phenomenex公司); Xseiect HSS T3分析型色谱柱[4.6 mm×250 mm,5 μm,沃特世科技(上海)有限公司]; 分析纯溶剂(成都市科龙化工试剂厂); 色谱级溶剂(德国Merck公司); 质谱级溶剂(美国 Thermo 公司)。

  • 1.3 提取和分离

  • 干燥甘蔗叶药材(10 kg)粗粉,先用10倍量的70%乙醇回流提取3次,合并提取液,减压浓缩得浸膏(1 135 g),蒸馏水充分分散; 再依次用3倍体积的石油醚、乙酸乙酯、正丁醇进行萃取。减压回收溶剂,分别得到石油醚部位浸膏、乙酸乙酯部位浸膏、正丁醇部位浸膏和水层部位浸膏。

  • 将乙酸乙酯部位浸膏(125.8 g)过硅胶柱色谱分离,以石油醚-乙酸乙酯(50∶1~0∶1)和乙酸乙酯-甲醇(50∶1~0∶1)梯度洗脱,得到7个流分(Fr.1~Fr.7)。其中,Fr.2经硅胶柱色谱,以石油醚-乙酸乙酯(20∶1~0∶1)梯度洗脱,得到5个亚组分(Fr.2-1~Fr.2-5)。Fr.2-2 经Sephadex LH-20 柱色谱分离,用氯仿-甲醇(1∶1)反复洗脱,得到化合物1(4.1 mg)、2(6.1 mg)、4(11.6 mg)、9(15.0 mg); Fr.2-4 经 pre-HPLC以20%甲醇分离纯化,得到化合物18(9.2 mg); Fr.2-5 经pre-HPLC 以30%甲醇分离纯化,得到化合物5(6.0 mg)、7(11.0 mg); Fr.2-6 经 pre-HPLC 以10%甲醇分离纯化,得到化合物12(2.2 mg)、13(5.3 mg)、14(4.3 mg); Fr.2-9 经 Sephadex LH-20 柱色谱(二氯甲烷-甲醇,1∶1)反复纯化得到化合物16(4.3 mg)。Fr.3 经 Sephadex LH-20 柱色谱分离,用氯仿-甲醇(1∶1)反复洗脱,得到12个亚组分(Fr.3-1~Fr.3-12)。其中,Fr.3-11经pre-HPLC 以35%乙腈分离纯化,得到化合物15(3.0 mg)。Fr.4经中压色谱分离凝胶(middle chromatography isolated gel,MCI)柱色谱以甲醇-水(50∶1~0∶1)梯度洗脱,得到5 个亚组分(Fr.4-1~Fr.4-5)。其中,Fr.4-1经 pre-HPLC 以20%甲醇分离纯化,制备得到化合物3(4.8 mg)、8(6.7 mg); Fr.4-2 经 pre-HPLC 以10%甲醇分离纯化,得到化合物19(3.7 mg)、20(7.4 mg); Fr.4-5 经 Sephadex LH-20 柱色谱用氯仿-甲醇(1∶1)反复洗脱,得到化合物17(5.0 mg)。Fr.6经硅胶柱色谱以石油醚-乙酸乙酯(50∶1~0∶ 1)梯度洗脱,得到10个不同极性的亚组分(Fr.6-1~Fr.6-10)。其中,Fr.6-2 经Sephadex LH-20 柱色谱用氯仿-甲醇(1∶1)反复洗脱,得到化合物6(5.1 mg); Fr.6-5经 pre-HPLC 以80%甲醇分离纯化,得到化合物10(13.6 mg)、11(8.1 mg)。

  • 2 结构鉴定

  • 化合物1 黄色针状结晶(甲醇)。HR-ESI-MS m/z: 137.024 4 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 9.68(1H,s,H-7),7.26(1H,dd,J=8.1,1.8 Hz,H-6),7.22(1H,d,J=1.8 Hz,H-2),6.89(1H,d,J=8.1 Hz,H-5); 13C-NMR(150 MHz,DMSO-d6)δ: 191.0(C-7),152.6(C-4),146.0(C-3),128.6(C-1),124.6(C-6),115.5(C-5),114.2(C-2)。以上数据与文献(王文祥等,2013)报道一致,故鉴定化合物1 为原儿茶醛(3,4-dihydroxybenzaldehyde)。

  • 化合物2 黄色粉末(甲醇)。1H-NMR(600 MHz,DMSO-d6)δ: 7.43(2H,s,H-2,6),6.83(1H,d,J=8.4 Hz,H-5),3.73(3H,s,7-OCH3); 13C-NMR(150 MHz,DMSO-d6)δ: 167.5(C-7),151.0(C-4),147.2(C-3),125.9(C-1),123.4(C-6),115.0(C-5),112.7(C-2),55.5(OCH3)。以上数据与文献(赵明等,2020)报道一致,故鉴定化合物2为3,4-二羟基-苯甲酸甲酯(methyl3,4-dihydroxybenzoate)。

  • 化合物3 白色粉末(甲醇)。1H-NMR(600 MHz,DMSO-d6)δ: 7.31(1H,d,J=2.0 Hz,H-2),7.26(1H,dd,J=8.2,2.0 Hz,H-6),6.76(1H,d,J=8.2 Hz,H-5); 13C-NMR(150 MHz,DMSO-d6)δ: 115.2(C-6),116.6(C-5),121.9(C-1),144.9(C-3),150.0(C-4),167.5(COOH)。以上数据与文献(夏明文等,2010)报道一致,故鉴定化合物3为3,4-二羟基苯甲酸(3,4-dihydroxybenzoic acid)。

  • 图1 化合物1-20的结构

  • Fig.1 Chemical structures of compounds 1-20

  • 化合物4 白色粉末(甲醇)。HR-ESI-MS m/z:167.034 5 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 7.40(1H,dd,J=8.4,2.0 Hz,H-6),7.35(1H,s,H-2),6.97(1H,d,J=8.4 Hz,H-5),3.81(3H,s,4-OCH3); 13C-NMR(150 MHz,DMSO-d6)δ: 167.5(7-COOH),151.4(C-4),146.8(C-3),129.7(C-6),121.5(C-1),116.1(C-2),111.3(C-5),55.6(4-OCH3)。以上数据与文献(邹欢等,2017)报道一致,故鉴定化合物4为3-羟基-4-甲氧基苯甲酸(3-hydroxy-4-methoxybenzoic acid)。

  • 化合物5 无色针状晶体(甲醇)。HR-ESI-MS m/z: 137.024 2 [M-H]-1H-NMR(600 MHz,CD3OD)δ: 7.88(2H,d,J=8.8 Hz,H-2,6),6.81(2H,d,J=8.8 Hz,H-3,5); 13C-NMR(150 MHz,CD3OD)δ: 170.2(COOH),160.7(C-4),133.0(C-2,6),122.9(C-1),116.0(C-3,5)。以上数据与文献(向丽敏等,2020)报道一致,故鉴定化合物5为对羟基苯甲酸(p-hydroxy-benzoic acid)。

  • 化合物6 白色粉末(甲醇)。HR-ESI-MS m/z: 121.029 5 [M-H]-1H-NMR(600 MHz,CD3OD)δ: 9.76(1H,s,CHO),7.77(2H,d,J=8.4 Hz,H-2,6),6.91(2H,d,J=8.4 Hz,H-3,5); 13C-NMR(150 MHz,CD3OD)δ: 192.8(CHO),165.2(C-4),133.4(C-2,6),130.3(C-1),116.9(C-3,5)。以上数据与文献(龚韦凡等,2017)报道一致,故鉴定化合物6为对羟基苯甲醛(p-hydroxybenzyl aldehyde)。

  • 化合物7 无色针状晶体(甲醇)。HR-ESI-MS m/z: 137.024 4 [M-H]-1H-NMR(600 MHz,CD3OD),δ: 7.59(1H,d,J=15.9 Hz,H-7),7.43(2H,d,J=8.4 Hz,H-2,6),6.79(2H,d,J=8.3 Hz,H-3,5),6.27(1H,d,J=15.9 Hz,H-8); 13C-NMR(150 MHz,CD3OD),δ: 171.0(C-9),161.2(C-4),146.6(C-7),131.2(C-2,6),127.2(C-1),116.8(C-3,5),115.6(C-8)。以上数据与文献(肖春荣,2019)报道一致,故鉴定化合物7为对羟基肉桂酸(p-hydroxy-cinnamic acid)。

  • 化合物8 白色针状晶体(甲醇)。1H-NMR(600 MHz,DMSO-d6),δ: 9.19(1H,s,OH)7.19(2H,s,H-2、6),3.79(6H,s,OCH3×2); 13C-NMR(150 MHz,DMSO-d6)δ: 167.5(-COOH),147.4(C-4),140.01(C-3,C-5),120.8(C-1),106.8(C-2,C-6),56.0(2-OCH3,6-OCH3)。以上数据与文献(陈丽等,2020)报道一致,故鉴定化合物8为丁香酸(syringic acid)。

  • 化合物9 白色粉末(甲醇)。1H-NMR(600 MHz,DMSO-d6)δ: 7.20(2H,s,H-2,6),3.8(6H,s,OCH3); 13C-NMR(150 MHz,DMSO-d6)δ: 167.4(C-1),147.4(C-3,5),140.1(C-4),106.8(C-2,6),56.0(OCH3)。以上数据与文献(韦玮等,2018)报道一致,故鉴定化合物9为3,5-二甲氧基对苯二酚(3,5-dihydroxy-hydroquinone)。

  • 化合物10 白色粉末(甲醇)。HR-ESI-MS m/z: 283.081 4 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 7.89(2H,d,J=8.8 Hz,H-2,6),7.11(2H,d,J=8.8 Hz,H-3,5),5.48(1H,d,J=1.8 Hz,H-1′),3.84(1H,m,H-2′),3.64(1H,dd,J=9.3,3.2 Hz,H-3′),3.39(1H,m,H-5′),3.29(1H,t,J=9.3 Hz,H-4′),1.09(3H,d,J=6.2 Hz,H-6′),; 13C-NMR(150 MHz,DMSO-d6)δ: 167.0(C-7),159.6(C-1),131.3(C-3,5),124.2(C-4),116.0(C-2,6),98.2(C-1′),71.7(C-2′),70.4(C-4′),70.1(C-3′),69.8(C-5′),17.9(C-6′)。以上数据与文献(李艳茸等,2014)报道一致,故鉴定化合物10为1-hydroxy-benzoyl-4-O-α-L-rhamnopyranoside。

  • 化合物11 无色针状晶体(甲醇)。HR-ESI-MS m/z: 299.076 7 [M-H]-.1H-NMR(600 MHz,DMSO-d6)δ: 7.88(2H,d,J=8.8 Hz,H-2,6),7.09(2H,d,J=8.8 Hz,H-3,5),4.98(1H,d,J=7.4 Hz,H-1′); 13C-NMR(150 MHz,DMSO-d6)δ: 60.6(C-6′),69.6(C-4′),73.2(C-2′),76.5(C-5′),77.1(C-3′),99.8(C-1′),115.8(C-3,5),124.2(C-1),131.2(C-2,6),160.8(C-4),167.0(C-7)。以上数据与文献(杨晨悦和王晓玲,2018)报道一致,故鉴定化合物11为对羟基苯甲酸-β-D-吡喃葡萄糖酯苷(p-hydroxy-benzoyl-β-D-glucopyranoside)。

  • 化合物12 黄色粉末(甲醇)。1H-NMR(600 MHz,CD3OD)δ: 7.86(1H,d,J=2.1 Hz,H-2′),7.52(1H,dd,J=8.0,2.0 Hz,H-6′),6.89(1H,d,J=8.0 Hz,H-5′),6.49(1H,d,J=2.0 Hz,H-8),6.20(1H,d,J=2.0 Hz,H-6); 13C-NMR(150 MHz,CD3OD)δ: 176.8(C-4),165.8(C-7),160.8(C-5),157.8(C-9),147.2(C-2),146.4(C-4′),145.7(C-3′),136.8(C-3),122.6(C-1′),121.3(C-6′),115.7(C-2′),117.2(C-5′)。以上数据与文献(满兴战等,2019)报道一致,故鉴定化合物12为槲皮素(quercetin)。

  • 化合物13 黄针晶体(丙酮)。HR-ESI-MS m/z: 329.064 7 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 7.32(2H,s,H-2′,6′),6.97(1H,s,H-3),6.54(1H,s,H-8),6.19(1H,s,H-6),3.88(6H,s,3′,5′-OCH3); 13C-NMR(150 MHz,DMSO-d6)δ: 181.8(C-4),164.6(C-7),163.6(C-2),161.4(C-9),157.4(C-5),148.2(C-3′,5′),139.9(C-4′),120.4(C-1′),104.4(C-2′,6′),103.4(C-3),99.0(C-6),94.3(C-8),56.4(3′,5′-OCH3)。以上数据与文献(邹忠杰和龚梦鹃,2010)报道一致,故鉴定化合物13为小麦黄素(tricin)。

  • 化合物14 黄针晶体(丙酮)。1H-NMR(600 MHz,CD3OD)δ: 7.76(1H,d,J=8.5 Hz,H-6′),7.74(1H,d,J=2.0 Hz,H-2′),7.06(1H,d,J=8.5 Hz,H-5′),6.40(1H,d,J=2.0 Hz,H-8),6.19(1H,d,J=2.0 Hz,H-6),3.93(3H,s,4′-OCH3); 13C-NMR(150 MHz,CD3OD)δ: 177.5(C-4),165.7(C-7),162.6(C-5),158.3(C-9),150.7(C-4′),147.4(C-3′),137.7(C-3),121.5(C-1′),115.7(C-5′,6′),112.2(C-2′),104.6(C-10),99.3(C-6),94.4(C-8),56.4(C-OCH3)。以上数据与文献(邓安珺等,2008)报道一致,故鉴定化合物14为异柽柳素(tamarixetin)。

  • 化合物15 黄色粉末(甲醇)。HR-ESI-MS m/z: 315.049 3 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 7.66(1H,d,J=2.2 Hz,H-2′),7.64(dd,J=8.7,2.2 Hz,H-6′),7.07(1H,d,J=8.6 Hz,H-5′),6.41(1H,d,J=2.0 Hz,H-8),6.18(1H,d,J=2.0 Hz,H-6),3.83(3H,s,3′-OCH3); 13C-NMR(150 MHz,DMSO-d6)δ: 55.6(3′-OCH3),93.4(C-8),98.2(C-6),103.0(C-10),111.8(C-2′),114.6(C-5′),119.7(C-1′),123.4(C-6′),136.2(C-3),146.2(C-2),146.3(C-3′),149.3(C-4′),156.2(C-9),160.7(C-5),164.0(C-7),175.9(C-4)。以上数据与文献(周北斗等,2018)报道一致,故鉴定化合物15为异鼠李素(isorhamnetin)。

  • 化合物16 白色粉末(甲醇)。HR-ESI-MS m/z: 301.069 7 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 6.74-6.87(3H,m,H-2′,5′,6′),6.74(d,J=2.1 Hz,2H),6.07(2H,m,H-6,8),5.41(1H,dd,J=12.6,3.0 Hz,H-2),3.78(3H,s,7-OCH3),3.23(2H,m,H-3); 13C-NMR(150 MHz,DMSO-d6)δ: 197.0(C-4),167.4(C-7),163.2(C-5),162.8(C-9),145.8(C-4′),145.2(C-3′),129.3(C-1′),118.0(C-6′),115.3(C-5′),114.4(C-2′),102.6(C-10),94.6(C-6),93.8(C-8),78.7(C-2),55.9(7-OCH3),42.1(C-3)。以上数据与文献(赵东保等,2005)报道一致,故鉴定化合物16为5,3′,4′-三羟基-7-甲氧基二氢黄酮(5,3′,4′-trihydroxy-7-methoxy-flavanone)。

  • 化合物17 黄色粉末(甲醇)。HR-ESI-MS m/z: 299.054 0 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 7.46(1H,d,J=2.0 Hz,H-2′),7.44(1H,dd,J=8.0,2.0 Hz,H-6′),6.88(1H,d,J=8.3 Hz,H-5′),6.72(2H,s,H-3,8),6.37(1H,d,J=2.0 Hz,H-6),3.87(3H,s,7′-OCH3); 13C-NMR(150 MHz,DMSO-d6)δ: 181.8(C-4),165.1(C-2),164.3(C-7),161.2(C-5),157.2(C-9),150.3(C-4′),145.9(C-3′),121.1(C-1′),119.2(C-6′),116.0(C-5′),113.4(C-2′),104.7(C-10),102.9(C-3),98.0(C-6),92.6(C-8),56.1(7′-OCH3)。以上数据与文献(张幸国和田景奎,2006)报道一致,故鉴定化合物17为7-O-甲基圣草酚(7-O-Methyleroidictyol)。

  • 化合物18 浅棕色油性物质(甲醇)。HR-ESI-MS m/z: 223.132 5 [M-H]-1H-NMR(600 MHz,DMSO-d6)δ: 6.97(1H,d,J=15.8 Hz,H-1′),6.27(1H,d,J=15.8 Hz,H-2′),5.86(1H,s,H-2),2.63(1H,d,J=17.0 Hz,H-6),2.26(3H,s,H-4′),2.16(1H,d,J=17.0 Hz,H-6),1.80(3H,d,J=1.4 Hz,H-7),0.96(3H,d,J=25.1 Hz,H-8),0.92(3H,s,H-9); 13C-NMR(150 MHz,DMSO-d6)δ: 198.2(C-3′),197.0(C-1),161.7(C-3),147.2(C-1′),130.5(C-2′),126.6(C-2),78.1(C-4),41.2(C-5)。27.2(C-4′),24.2(C-9),49.3(C-6),23.2(C-8),18.6(C-7)。以上数据与文献(Yi et al.,2012)报道一致,故鉴定化合物18为[(E)-4-(1S,3R,4R)-1-hydroxy-4,5,5-trimethyl-7-oxabicyclo [4.1.0]heptan-1-yl]but-1-en-3-o-ne。

  • 化合物19 无色油性物质(甲醇)。HR-ESI-MS m/z: 269.118 2 [M+HCOO]-1H-NMR(600 MHz,DMSO-d6)δ: 5.77(1H,s,H-4),5.67(1H,m,H-7),5.65(1H,m,H-8),4.98(1H,m,H-9),2.35(1H,d,J=16.7 Hz,H-2α),2.07~2.01(1H,m,H-2β),1.79(3H,d,J=1.4 Hz,H-13),1.10(3H,d,J=6.4 Hz,H-10),0.92(3H,s,H-12),0.90(3H,s,H-11); 13C-NMR(150 MHz,DMSO-d6)δ: 19.0(C-13),23.1(C-11),24.0(C-12),24.1(C-10),41.0(C-1),49.4(C-2),66.1(C-9),125.5(C-4),127.9(C-8),135.9(C-7),197.4(C-3)。以上数据与文献(曾金祥等,2017)报道一致,故鉴定化合物19为blumenol A。

  • 化合物20 无色油性物质(甲醇)。1H-NMR(600 MHz,CD3OD)δ: 7.81(1H,s,H-6),6.27(1H,t,J=6.8 Hz,H-1′),4.39(1H,m,H-4′),3.89(1H,m,H-3′),3.79(1H,m,H-5α),3.72(1H,m,H-5β),2.26~2.15(2H,m,H-2′),1.87(3H,s,CH3); 13C-NMR(150 MHz,CD3OD)δ: 12.4(CH3),41.2(C-2′),62.8(C-5′),72.2(C-3′),86.2(C-2′),88.8(C-1′),111.5(C-5),138.2(C-6),152.4(C-2),166.4(C-4)。以上数据与文献(杨顺丽等,2003)报道一致,故鉴定化合物20为胸腺嘧啶脱氧核苷(thymidine)。

  • 3 讨论

  • 本研究从甘蔗叶中共分离得到20个化合物,包括11个酚酸类化合物、6个黄酮类化合物、2个倍半萜化合物和1个生物碱类化合物。化合物1-469-1113-161820均为首次从甘蔗叶中分离得到。

  • 前期研究显示,甘蔗叶具有抗炎作用(侯小涛等,2013)。其中,化合物1原儿茶醛具有抑制炎症作用(Zhou et al.,2005); 化合物6对羟基苯甲醛可促进神经的修复,其作用机制与促进内皮细胞释放神经营养因子VEGF-A和BDNF有关(杨媛等,2019); 化合物12槲皮素具有抗炎作用,能够抑制NF-κB的活化,继而抑制细胞因子和其他促炎因子的释放(Guazelli et al.,2018); 化合物15异鼠李素具有抗炎等作用(Lee &Kim,2018),可通过减轻氧化应激,缓解对游离脂肪酸对L-02细胞诱导的脂质沉积。核因子NF-E2相关因子2通路在此过程中发挥了重要作用(周健等,2021)。甘蔗叶提取物具有体外抗肿瘤作用,乙酸乙酯提取物是其中最主要的活性部位(邓家刚等,2010)。倍半萜类化合物具有抗肿瘤活性(付佳等,2019)。本研究分离到的成分中亦包含倍半萜类成分,但它们是否为甘蔗叶的抗肿瘤活性成分,尚需后续进一步研究加以验证。本文对甘蔗叶乙酸乙酯部位的化学成分进行了研究,本研究结果丰富了甘蔗叶化学成分的结构类型,为今后甘蔗叶资源回收再利用及药用价值的开发提供了科学依据。

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    • PAN WY, DENG JG, HOU XT, et al. , 2019. Chemical constituents of agricultural residues producing from 4 kinds of gramineous crops and their pharmacological effect [J]. Chin J Exp Trad Med Form, 25(10): 214-225. [潘王芸, 邓家刚, 侯小涛, 等, 2019. 四种禾本科农作物的废弃物化学成分及药理作用[J]. 中国实验方剂学杂志, 25(10): 214-225. ]

    • QI F , SUN JH , YAN JQ , et al. , 2018. Anti-inflammatory effects of isorhamnetin on LPS-stimulated human gingival fibroblasts by activating Nrf2 signaling pathway [J]. Microb Pathog, 120: 37-41.

    • WANG WX, 2013. Chemical constituents in anti-hepatic fibrosis fraction of Salvia miltiorrhiza [J]. Nat Prod Res Dev, 25(6): 789-791. [王文祥, 2013. 丹参抗肝纤维化有效部位化学成分研究 [J]. 天然产物研究与开发, 25(6): 789-791. ]

    • WEI W, DENG JG, HAO EW, et al. , 2018. Chemical constituents from ethyl acetate extract of leaves of Saccharum officinarum [J]. Chin J Exp Trad Med Form, 24(21): 51-55. [韦玮, 邓家刚, 郝二伟, 等, 2018. 甘蔗叶乙酸乙酯萃取部位化学成分分离鉴定[J]. 中国实验方剂学杂志, 24(21): 51-55. ]

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  • 参考文献

    • BORSEN W, PINDER D, SHECHING W, et al. , 2011. Effects of the aqueous extract of sugarcane leaves on antimutation and nitric oxide generation [J]. Food chem, 124 (2): 495-500.

    • CHEN L, KANG M, DENG XK, et al. , 2020. Study on the chemical constituents from Curculigo orchioides [J]. J Sichuan Univ Med Sci, 57(3): 591-595. [陈丽, 康敏, 邓小宽, 等, 2020. 仙茅化学成分的研究[J]. 四川大学学报(自然科学版), 57(3): 591-595. ]

    • DENG AJ, QING HL, 2008. Studies on chemical constituents of fruits of Bridelia tomentosa [J]. Chin J Chin Mat Med, 33(2): 158-160. [邓安珺, 秦海林, 2008. 土蜜树果实化学成分的研究[J]. 中国中药杂志, 33(2): 158-160. ]

    • DENG JG, GUO HW, HOU XT, et al. , 2010. Experimental study on the antitumor effects of extracts from leaves of Saccharum offieinatum in vitro [J]. Liaoning J Trad Chin Med, 37(1): 32-34. [邓家刚, 郭宏伟, 侯小涛, 等, 2010. 甘蔗叶提取物的体外抗肿瘤活性研究[J]. 辽宁中医杂志, 37(1): 32-34. ]

    • FU J, LI FH, LI CK, et al. , 2019. Reviews on natural monocyclic sesquiterpenoids and their bioactivities [J]. Chin J Chin Mat Med, 44(17): 3672-3683. [付佳, 李锋华, 李常康, 等, 2019. 天然来源单环倍半萜类化合物的结构及其药理活性研究进展[J]. 中国中药杂志, 44(17): 3672-3683. ]

    • GONG WF, ZOU DJ, GAO RX, et al. , 2017. Chemical constituents from roots of Smilax riparia [J]. Chin Med Mat, 40(7): 1595-1599. [龚韦凡, 邹大江, 高瑞锡, 等, 2017. 牛尾菜根茎的化学成分研究 [J]. 中药材, 40(7): 1595-1599. ]

    • GUAZELLI C, STAURENGOFERRARI L, ZARPELON AC, et al. , 2018. Quercetin attenuates zymosan-induced arthritis in mice [J]. Biomed Pharmacoth, 102: 175-184.

    • HE YT, DENG JG, ZHAO CC, et al. , 2016. Research progress of chemical components and pharmacological activities in leaves of Saccharum offieinatum [J]. Asia-Pac Trad Med, 12(8): 49-51. [何耀涛, 邓家刚, 赵超超, 等, 2016. 甘蔗叶化学成分及药理作用研究进展[J]. 亚太传统医药, 12(8): 49-51. ]

    • HOU XT, DENG JG, LI AY, et al. , 2011. Study on hypoglycemia activity of the different extracts in leaves of Saccharum offieinatum [J]. W Chin J Pharm Sci, 26(5): 451-453. [侯小涛, 邓家刚, 李爱媛, 等, 2011. 甘蔗叶不同提取物对3种糖尿病模型的降血糖作用[J]. 华西药学杂志, 26(5): 451-453. ]

    • HOU XT, DENG JG, MA JF, et al. , 2010. Effect of extracts from leaves of Saccharum offieinatum on antibacterial in vitro [J]. W Chin J Pharm Sci, 25(2): 161-163. [侯小涛, 邓家刚, 马建凤, 等, 2010. 甘蔗叶提取物的体外抑菌作用研究[J]. 华西药学杂志, 25(2): 161-163. ]

    • HOU XT, MA LN, DENG JG, et al. , 2013. Extracting total flavonoids from leaves of Saccharum officinarum and anti-inflammatory evaluation [J]. Chin Trad Patent Med, 35(9): 2047-2050. [侯小涛, 马丽娜, 邓家刚, 等, 2013. 甘蔗叶总黄酮提取工艺及抗炎活性的研究[J]. 中成药, 35(9): 2047-2050. ]

    • JIAN S, XUE MH, MOU MZ, et al. , 2014. Antioxidant and nitrite-scavenging capacities of phenolic compounds from sugarcane (Saccharum officinarum L. ) tops [J]. Molecules, 19(9): 13147-13160.

    • JIANG H, SHU JP, FANG XF, et al. , 2012. Study on extraction and isolation of polysaccharide from leaves of Saccharum officinarum and its antitumor effect in vitro [J]. Clin Ration Drug Use, 5(15): 28-29. [江恒, 苏纪平, 方锋学, 等, 2012. 甘蔗叶多糖的提取分离及体外抗肿瘤作用研究[J]. 临床合理用药杂志, 5(15): 28-29. ]

    • LEE MS, KIM Y, 2018. Effects of isorhamnetin on adipocyte mito chondrial biogenesis and AMPK activation [J]. Molecules, 23(8): E1853.

    • LI YR, LI C, WANG ZM, et al. , 2014. Chemical constituents from whole plants of Aconitum tanguticum (Ⅲ) [J]. Chin J Chin Mat Med, 39(7): 1163-1167. [李艳茸, 李春, 王智民, 等, 2014. 藏药甘青乌头化学成分研究(Ⅲ)[J]. 中国中药杂志, 39(7): 1163-1167. ]

    • MAN XZ, ZHOU F, TAN Y, et al. , 2019. Chemical constituents from Euscaphis japonica [J]. Chin Trad Herb Drugs, 50(24): 5924-5929. [满兴战, 周峰, 谭洋, 等, 2019. 福建野鸦椿化学成分的研究[J]. 中草药, 50(24): 5924-5929. ]

    • PAN WY, DENG JG, HOU XT, et al. , 2019. Chemical constituents of agricultural residues producing from 4 kinds of gramineous crops and their pharmacological effect [J]. Chin J Exp Trad Med Form, 25(10): 214-225. [潘王芸, 邓家刚, 侯小涛, 等, 2019. 四种禾本科农作物的废弃物化学成分及药理作用[J]. 中国实验方剂学杂志, 25(10): 214-225. ]

    • QI F , SUN JH , YAN JQ , et al. , 2018. Anti-inflammatory effects of isorhamnetin on LPS-stimulated human gingival fibroblasts by activating Nrf2 signaling pathway [J]. Microb Pathog, 120: 37-41.

    • WANG WX, 2013. Chemical constituents in anti-hepatic fibrosis fraction of Salvia miltiorrhiza [J]. Nat Prod Res Dev, 25(6): 789-791. [王文祥, 2013. 丹参抗肝纤维化有效部位化学成分研究 [J]. 天然产物研究与开发, 25(6): 789-791. ]

    • WEI W, DENG JG, HAO EW, et al. , 2018. Chemical constituents from ethyl acetate extract of leaves of Saccharum officinarum [J]. Chin J Exp Trad Med Form, 24(21): 51-55. [韦玮, 邓家刚, 郝二伟, 等, 2018. 甘蔗叶乙酸乙酯萃取部位化学成分分离鉴定[J]. 中国实验方剂学杂志, 24(21): 51-55. ]

    • XIA MW, TAN JJ, YANG L, et al. , 2010. Studies on chemcial constituents in Patrinia scabiosaefolia [J]. Chin Trad Herb Drugs, 41(10): 1612-1615. [夏明文, 谭菁菁, 杨琳, 等, 2010. 黄花败酱化学成分研究 [J]. 中草药, 41(10): 1612-1615. ]

    • XIANG LM, LI J, LIU JX, et al. , 2020. Study on the chemical constituents from the ethyl acetate fraction of Syzygium jambos [J]. J Guangdong Pharm Univ, 36(3): 334-337. [向丽敏, 李洁, 刘嘉鑫, 等, 2020. 蒲桃壳乙酸乙酯部位化学成分研究 [J]. 广东药科大学学报, 36(3): 334-337. ]

    • XIAO CR, 2019. Studies on chemical constituents of Turpinia montana and Vitex rotundifolia [D]. Nanchang: Jiangxi University of Traditional Chinese Medicine: 146. [肖春荣, 2019. 中药山香圆和蔓荆子化学成分研究 [D]. 南昌: 江西中医药大学: 146]

    • YANG CY, WANG XL, 2018. Phenolic constituents from the barks of Broussonetia papyrifera [J]. Chin Med Mat, 41(1): 111-114. [杨晨悦, 王晓玲, 2018. 构树皮中的酚性化合物研究[J]. 中药材, 41(1): 111-114. ]

    • YANG SL, LIU XK, 2003. Nucleosides from Smilacina atropurpurea [J]. Chin J Nat Med, 1(4): 4-6. [杨顺丽, 刘锡葵, 2003. 竹叶菜中的核苷类化学成分[J]. 中国天然药物, 1(4): 4-6. ]

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