2. 江西中医药大学 江西民族传统药现代科技与产业发展协同创新中心, 江西 南昌 330004
2. Jiangxi Collaborative Innovation Center of Modern Technology and Industrial Development of Ethnic Traditional Medicine, Jiangxi University of TCM, Nanchang 330004, China
熏倒牛科(Biebersteiniaceae)植物共5种,分布地域西起希腊,经东地中海、西亚、中亚,至我国甘青地区。该科植物在我国藏族地区及伊朗民间有较长的应用历史[1-2]。现代药理学研究表明,该科植物具有镇痛抗炎、抗氧化、镇静、解痉、降血糖及血压、抑菌及抗动脉粥样硬化作用[3]。该科植物化学成分主要有黄酮、生物碱、苯丙素、香豆素、甾醇、糖类、挥发油和萜类等[3]。为进一步充分发掘该科植物作为民族药的用药潜力,本实验对熏倒牛科植物熏倒牛Biebersteinia heterostemon Maxim.化学成分进行研究,分离得到10个黄酮类成分,分别鉴定为香叶木苷(diomsmin,1)、芹菜素-7-O-芦丁糖苷(apigenin-7-O-rutinoside,2)、金圣草黄素- 7-O-槐糖苷(chrysoeriol-7-O-sophoroside,3)、木犀草素-7-O-芸香糖苷(luteolin-7-rutinoside,4)、槲皮素-3-O-β-D-吡喃葡萄糖基 (1→2)-β-D-吡喃葡萄糖苷 [quercetin-3-O-β-D-glucopyranosyl (1→2)-β-D- glucopyranoside,5]、芹黄素7-O-槐糖苷(apigenin- 7-O-sophoroside,6)、槲皮素-3-O-β-吡喃葡萄糖苷(quercetin 3-O-β-glucopyranoside,7)、6-hydroxy-luteolin(8)、木犀草苷(luteoloside,9)、海波拉亭- 7-O-β-D-吡喃葡萄糖苷(hypolaetin-7-O-β-D- glucopyranoside,10)。化合物1、3、5~8、10为首次从熏倒牛中分离得到。
1 仪器与材料Bruker AVANCE III 600核磁共振波谱仪(瑞士布鲁克公司);LC-6AD制备型高效液相色谱(日本岛津株式会社);柱色谱硅胶(200~300目)和GF254薄层色谱硅胶(青岛海洋化工厂);Sephadex LH-20(GE Healthcare Bio-Sciences AB公司,瑞典);反相ODS填料(YMC公司,日本);Agilent 1200谱仪(Agilent公司,美国);分析高效液相色谱柱为Welch AQ-C18柱(250 mm×4.6 mm,5 μm);制备高效色谱柱为YMC-PACK ODS-A(250 mm×10 mm,5 μm)。高效液相色谱用甲醇为色谱级(TEDIA),其余试剂均为分析纯。
熏倒牛于2014年采集于西藏,经江西中医药大学民族药中心钟国跃教授鉴定为熏倒牛Biebersteinia heterostemon Maxim.。
2 提取与分离熏倒牛全草(3.5 kg)粉碎,50%乙醇提取3次,合并滤液,减压回收得乙醇浸膏(1 000 g)。加入适量水混悬,分别用石油醚、醋酸乙酯和水饱和正丁醇进行萃取,得石油醚部位(400 g)、醋酸乙酯部位(60 g)和水饱和正丁醇部位(122 g)。正丁醇部位经MCI柱色谱,以水-甲醇(10∶0、10∶1、10∶2、10∶3、10∶4、10∶5、10∶6)梯度洗脱,得7个部分,每部分质量分别为48、8、8、23、8、4、2 g。其中第4个部分进行Sephadex LH-20柱色谱,50%甲醇洗脱,分离得到6个流分Fr. 1~6。利用HPLC制备分离技术,从Fr. 1分离得到化合物1(6 mg)、2(8 mg)、3(12 mg),从Fr. 4分离得到化合物4(9 mg)、5(9 mg)、6(4 mg),从Fr. 5分离得到化合物7(15 mg)、8(20 mg)、9(5 mg)、10(6 mg)。
3 结构鉴定化合物1:黄色粉末;1H-NMR (600 MHz,CD3OD) δ: 6.82 (1H,s,H-3),6.56 (1H,s,H-6),6.73 (1H,s,H-8),7.54 (1H,brs,H-2′),6.99 (1H,d,J = 8.0 Hz,H-5′),7.59 (1H,d,J = 8.0 Hz,H-6′),5.06 (1H,brs,H-1″),4.73 (1H,brs,H-1′′′),4.00 (3H,s,4′-OCH3),1.19 (3H,d,J = 6.3 Hz,H-6′′′);13C-NMR (150 MHz,CD3OD) δ: 163.3 (C-2),105.7 (C-3),182.6 (C-4),157.5 (C-5),100.0 (C-6),165.3 (C-7),94.9 (C-8),161.6 (C-9),103.1 (C-10),120.6 (C-1′),115.4 (C-2′),148.1 (C-3′),150.9 (C-4′),109.3 (C-5′),122.1 (C-6′),55.3 (4′-OMe),100.6 (C-1″),73.3 (C-2″),76.4 (C-3″),70.9 (C-4″),75.7 (C-5″),65.9 (C-6″),99.6 (C-1′′′),70.6 (C-2′′′),69.8 (C-3′′′),72.6 (C-4′′′),68.3 (C-5′′′),16.4 (C-6′′′)。以上数据与文献报道一致[4],故鉴定化合物1为香叶木苷。
化合物2:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 12.98 (1H,s,5-OH),6.87 (1H,s,H-3),6.46 (1H,d,J = 2.0 Hz,H-6),6.78 (1H,d,J = 2.0 Hz,H-8),7.96 (2H,d,J = 8.4 Hz,H-2′,6′),6.96 (2H,d,J = 8.4 Hz,H-3′,5′),5.07 (1H,d,J = 7.5 Hz,H-1″),4.55 (1H,brs,H-1′′′),1.08 (3H,d,J = 6.2 Hz,H-6′′′);13C-NMR (150 MHz,DMSO-d6) δ: 164.6 (C-2),103.5 (C-3),182.3 (C-4),163.3 (C-5),100.0 (C-6),161.8 (C-7),95.2 (C-8),157.2 (C-9),105.8 (C-10),121.4 (C-1′),129.0 (C-2′,6′),116.5 (C-3′,5′),161.9 (C-4′),100.9 (C-1″),72.5 (C-2″),76.0 (C-3″),70.7 (C-4″),76.7 (C-5″),66.5 (C-6″),99.9 (C-1′′′),70.0 (C-2′′′),71.1 (C-3′′′),73.5 (C-4′′′),68.7 (C-5′′′),18.2 (C-6′′′)。以上数据与文献报道一致[5],故鉴定化合物2为芹菜素-7-O-芦丁糖苷。
化合物3:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 12.97 (1H,brs,5-OH),6.99 (1H,s,H-3),6.52 (1H,d,J = 2.0 Hz,H-6),6.95 (1H,d,J = 2.0 Hz,H-8),7.60 (1H,brs,H-2′),7.59 (1H,d,J = 8.4 Hz,H-6′),6.96 (1H,d,J = 8.4 Hz,H-5′),5.18 (1H,d,J = 7.0 Hz,H-1″),4.48 (1H,d,J = 7.8 Hz,H-1′′′),3.90 (3H,s,3′-OMe);13C-NMR (150 MHz,DMSO- d6) δ: 164.6 (C-2),103.8 (C-3),182.5 (C-4),161.5 (C-5),100.1 (C-6),163.3 (C-7),96.0 (C-8),157.2 (C-9),105.8 (C-10),121.7 (C-1′),110.6 (C-2′),148.5 (C-3′),151.3 (C-4′),116.2 (C-5′),120.9 (C-6′),99.1 (C-1″),83.3 (C-2″),76.1 (C-3″),69.7 (C-4″),77.5 (C-5″),61.1 (C-6″),105.3 (C-1′′′),75.2 (C-2′′′),76.6 (C-3′′′),70.1 (C-4′′′),77.5 (C-5′′′),60.9 (C-6′′′),56.3 (3′-OMe)。以上数据与文献报道一致[6],故鉴定化合物3为金圣草黄素-7-O-槐糖苷。
化合物4:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 12.99 (1H,brs,5-OH),6.74 (2H,brs,H-3,8),6.46 (1H,brs,H-6),7.41 (1H,brs,H-2′),6.91 (1H,d,J = 8.4 Hz,H-5′),7.45 (1H,d,J = 8.4 Hz,H-6′),5.08 (1H,d,J = 7.5 Hz,H-1″),4.55 (1H,brs,H-1′′′),1.08 (3H,d,J = 6.2 Hz,H-6′′′);13C-NMR (150 MHz,DMSO-d6) δ: 165.0 (C-2),103.6 (C-3),182.3 (C-4),161.6 (C-5),100.3 (C-6),163.3 (C-7),95.1 (C-8),157.3 (C-9),105.8 (C-10),121.5 (C-1′),113.8 (C-2′),146.3 (C-3′),150.6 (C-4′),116.4 (C-5′),119.6 (C-6′),100.9 (C-1″),73.5 (C-2″),76.6 (C-3″),69.9 (C-4″),75.9 (C-5″),66.4 (C-6″),100.0 (C-1′′′),70.8 (C-2′′′),71.1 (C-3′′′),72.5 (C-4′′′),68.7 (C-5′′′),18.1 (C-6′′′)。以上数据与文献报道一致[7],故鉴定化合物4为木犀草素-7-O-芸香糖苷。
化合物5:黄色粉末;1H-NMR (600 MHz,CD3OD) δ: 6.21 (1H,brs,H-6),6.40 (1H,brs,H-8),7.70 (1H,d,J = 1.9 Hz,H-2′),7.55 (1H,dd,J = 8.4,1.9 Hz,H-6′),6.91 (1H,d,J = 8.4 Hz,H-5′),5.36 (1H,d,J = 7.6 Hz,H-1″),4.79 (1H,d,J = 7.1 Hz,H-1′′′);13C-NMR (150 MHz,CD3OD) δ: 157.4 (C-2),133.7 (C-3),178.3 (C-4),161.6 (C-5),98.4 (C-6),164.5 (C-7),93.2 (C-8),157.0 (C-9),104.3 (C-11),121.6 (C-1′),116.3 (C-2′),144.5 (C-3′),148.3 (C-4′),114.7 (C-5′),121.6 (C-6′),99.7 (C-1″),81.4 (C-2″),76.4 (C-3″),69.6 (C-4″),76.8 (C-5″),60.9 (C-6″),103.3 (C-1′′′),74.0 (C-2′′′),76.6 (C-3′′′),69.6 (C-4′′′),76.8 (C-5′′′),60.8 (C-6′′′)。以上数据与文献报道一致[8],故鉴定化合物5为槲皮素-3-O-β-D-吡喃葡萄糖基 (1→2)-β-D-吡喃葡萄糖苷。
化合物6:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 6.87 (1H,s,H-3),6.50 (1H,d,J = 2.1 Hz,H-6),6.89 (1H,d,J = 2.2 Hz,H-8),7.95 (2H,d,J = 8.5 Hz,H-2′,6′),6.95 (2H,d,J = 8.5 Hz,H-3′,5′),5.20 (1H,d,J = 7.1 Hz,H-1″),4.48 (1H,d,J = 7.8 Hz,H-1′′′);13C-NMR (150 MHz,DMSO-d6) δ: 160.0 (C-2),103.4 (C-3),182.4 (C-4),157.2 (C-5),98.9 (C-6),164.7 (C-7),95.6 (C-8),161.5 (C-9),105.8 (C-10),121.2 (C-1′),129.0 (C-2′,6′),116.5 (C-3′,5′),163.2 (C-4′),100.1 (C-1″),83.2 (C-2″),75.2 (C-3″),70.0 (C-4″),76.1 (C-5″),60.9 (C-6″),105.2 (C-1′′′),76.6 (C-2′′′),77.4 (C-3′′′),69.6 (C-4′′′),77.4 (C-5′′′),61.0 (C-6′′′)。以上数据与文献报道一致[9],故鉴定化合物6为芹黄素7-O-槐糖苷。
化合物7:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 12.6 (1H,s,5-OH),6.38 (1H,s,H-6),6.18 (1H,s,H-8),7.63~7.55 (2H,m,H-2′,6′),6.84 (1H,d,J = 8.8 Hz,H-5),5.46 (1H,d,J = 7.1 Hz,H-1″);13C-NMR (150 MHz,DMSO-d6) δ: 156.8 (C-2),133.6 (C-3),177.7 (C-4),161.6 (C-5),99.4 (C-6),165.5 (C-7),94.0 (C-8),156.4 (C-9),104.8 (C-10),121.5 (C-1′),115.6 (C-2′),145.3 (C-3′),149.0 (C-4′),116.5 (C-5′),122.0 (C-6′),101.3 (C-1″),74.5 (C-2″),76.9 (C-3″),70.3 (C-4″),78.0 (C-5″),61.4 (C-6″)。以上数据与文献报道一致[10],故鉴定化合物7为槲皮素-3-O-β-D-吡喃葡萄糖苷。
化合物8:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 12.41 (1H,s,5-OH),6.27 (1H,s,H-3),6.64 (1H,s,H-8),7.51 (1H,d,J = 2.4 Hz,H-2′),7.49 (1H,dd,J = 8.3,2.4 Hz,H-6′),6.90 (1H,d,J = 8.2 Hz,H-5′);13C-NMR (150 MHz,DMSO-d6) δ: 164.1 (C-2),102.8 (C-3),182.4 (C-4),146.1 (C-5),125.5 (C-6),153.7 (C-7),98.9 (C-8),153.4 (C-9),103.7 (C-10),122.2 (C-1′),114.0 (C-2′),145.9 (C-3′),150.0 (C-4′),116.3 (C-5′),119.5 (C-6′)。以上数据与文献报道一致[11],故鉴定化合物8为6-hydroxyluteolin。
化合物9:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 6.75 (1H,s,H-3),6.79 (1H,d,J = 2.1 Hz,H-6),6.45 (1H,d,J = 2.1 Hz,H-8),7.42 (1H,d,J = 2.2 Hz,H-2′),6.90 (1H,d,J = 8.4 Hz,H-5′),7.45 (1H,dd,J = 8.4,2.2 Hz,H-6′),5.08 (1H,d,J = 7.5 Hz,H-1″),12.91 (1H,s,5-OH);13C-NMR (150 MHz,DMSO-d6) δ: 164.9 (C-2),103.5 (C-3),182.3 (C-4),161.5 (C-5),100.3 (C-6),163.3 (C-7),95.1 (C-8),157.3 (C-9),105.7 (C-10),121.5 (C-1′),113.8 (C-2′),146.3 (C-3′),150.1 (C-4′),116.4 (C-5′),119.6 (C-6′),99.9 (C-1″),73.5 (C-2″),77.6 (C-3″),69.9 (C-4″),76.8 (C-5″),61.0 (C-6″)。以上数据与文献报道一致[12],故鉴定化合物9为木犀草苷。
化合物10:黄色粉末;1H-NMR (600 MHz,DMSO-d6) δ: 12.42 (1H,s,5-OH),6.71 (1H,s,H-3),6.63 (1H,s,H-6),7.48 (1H,d,J = 2.4 Hz,H-2′),6.89 (1H,d,J = 8.2 Hz,H-5′),7.47 (1H,dd,J = 8.2,2.4 Hz,H-6′),4.93 (1H,d,J = 7.6 Hz,H-1″),3.73 (1H,d,J = 11.6 Hz,H-5″),3.57~3.04 (4H,m,glc H-2″,3″,4″,6″)。以上数据与文献报道一致[13],故鉴定化合物10为海波拉亭-7-O-β-D-吡喃葡萄糖苷。
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