彭 騰,邱建平,鄧 赟,涂永勤
1成都中醫(yī)藥大學(xué)藥學(xué)院教育部中藥材標(biāo)準(zhǔn)化重點(diǎn)實(shí)驗(yàn)室中藥資源系統(tǒng)研究與開(kāi)發(fā)利用省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地,成都610075;2重慶市中藥研究院,重慶400066
鐘花報(bào)春花的化學(xué)成分研究(Ⅱ)
彭 騰1*,邱建平1,鄧 赟1,涂永勤2
1成都中醫(yī)藥大學(xué)藥學(xué)院教育部中藥材標(biāo)準(zhǔn)化重點(diǎn)實(shí)驗(yàn)室中藥資源系統(tǒng)研究與開(kāi)發(fā)利用省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地,成都610075;2重慶市中藥研究院,重慶400066
從鐘花報(bào)春花Primula sikkmensis Hook.中分離得到5個(gè)化合物,通過(guò)波譜分析其結(jié)構(gòu)分別鑒定為5-羥基黃酮(1),2-苯基色原酮(2),5,8-二羥基黃酮(3),2'-羥基黃酮(4),3'-羥基-黃酮-4'-O-β-D-吡喃葡萄糖苷(5)。其中化合物1~4首次從該屬植物中分離得到,化合物5首次從該植物中分離得到,并首次對(duì)3的NMR數(shù)據(jù)進(jìn)行了歸屬。
鐘花報(bào)春花;化學(xué)成分;黃酮
報(bào)春花科(Primulaceae)約22屬共800種,廣布全球,主產(chǎn)于北半球溫帶和較寒冷地區(qū),還有一些種生活于北極和高山地區(qū),主要作為觀賞花卉,也有入藥者。其中,最大的屬為報(bào)春花屬(Primula),約有500種,中國(guó)有該屬植物300余種,主要分布于云南、西藏和四川[1]。目前,對(duì)報(bào)春花屬植物的化學(xué)成分研究報(bào)道還較少[2-5],主要是含有槲皮素、山奈酚、楊梅素及其葡糖糖苷等。課題組在前期研究的基礎(chǔ)上[6],對(duì)鐘花報(bào)春花的化學(xué)成分進(jìn)行了進(jìn)一步研究,分離得到了5個(gè)化合物,其中化合物1~4首次從該屬植物中分離得到,化合物5首次從該植物中分離得到。
ZF-90型暗箱式紫外透射儀(上海顧村電光儀器廠),X-4型顯微熔點(diǎn)測(cè)定儀(上海精密科學(xué)儀器有限公司),Bruker Avance 400和600型核磁共振儀(德國(guó)Bruker公司),Autospec Premier質(zhì)譜儀(美國(guó)Waters公司)。薄層層析和柱層析硅膠均為青島海洋化工廠出品。其余試劑均為化學(xué)純或分析純。Sephadex LH一20(Amersham Biosciences),鐘花報(bào)春花(Primula sikkmensis Hook)采自四川小金縣,樣品經(jīng)重慶中藥研究所涂永勤博士鑒定。
鐘花報(bào)春花8 kg粉碎,8倍體積量95%乙醇冷浸過(guò)夜(12 h),回流提取2次,回收乙醇得浸膏。提取物分別用石油醚、乙酸乙酯、正丁醇進(jìn)行梯度萃取,得到石油醚部位(61 g),乙酸乙酯部位(132 g)和正丁醇部位(190 g)。這三個(gè)部位分別加硅膠拌樣,上樣于硅膠柱層析(200~300目),石油醚部位用石油醚-乙酸乙酯15∶1得到化合物1(145 mg),石油醚-乙酸乙酯9∶1得到化合物2(250 mg);乙酸乙酯部位用石油醚-乙酸乙酯6∶1得到化合物3 (450 mg),石油醚-乙酸乙酯3∶1得到化合物4(320 mg);正丁醇部位用氯仿-甲醇12∶1洗脫,再經(jīng)Sephadex LH-20柱色譜,分離得到化合物5(168 mg)。其中化合物1~4首次從該屬植物中分離得到,化合物5首次從該中植物中分離得到。
化合物1 分子式為C15H10O3,黃色柱狀晶體(石油醚-乙酸乙酯),λmax270.6 nm,EI-MS m/z 238[M]+;1H NMR(400 MHz,CDCl3)δ:6.73(1H,s,H-3),6.80(1H,d,J=8.3 Hz,H-6),7.54(1H,m,H-7),6.99(1H,d,J=8.3 Hz,H-8),7.92(2H,d,J= 7.4 Hz,H-2',6'),7.54(3H,m,H-3',4',5');13C NMR(100 MHz,CDCl3)δ:164.5(C-2),106.0(C-3),183.6(C-4),160.7(C-5),111.4(C-6),135.4 (C-7),107.1(C-8),156.4(C-9),110.8(C-10),131.1(C-1'),132.0(C-4'),129.1(C-3',5'),126.4 (C-2',6')。以上數(shù)據(jù)與5-hydroxy flavone[7]一致。
化合物2 分子式為C15H10O2,無(wú)色針晶(石油醚-乙酸乙酯),λmax294.4,251.2 nm,EI-MS m/z 222[M]+;1H NMR(600 MHz,CDCl3)δ:6.99(1H,s,H-3),8.02(1H,d,J=7.8 Hz,H-5),7.46(1H,t,J= 7.2 Hz,H-6),7.78(1H,t,J=7.4 Hz,H-7),7.72 (1H,d,J=8.4 Hz,H-8),8.05(2H,d,J=7.4 Hz,H-2',6'),7.55(3H,m,H-3',4',5');13C NMR(150 MHz,CDCl3)δ:163.3(C-2),107.5(C-3),178.3(C-4),125.2(C-5),125.6(C-6),133.7(C-7),118.1 (C-8),156.2(C-9),123.9(C-10),131.6(C-1'),131.7(C-4'),129.0(C-3',5'),126.2(C-2',6')。以上數(shù)據(jù)與2-phenyl-chromone[7]一致。
化合物3 分子式為C15H10O4,橙黃色柱狀晶體(氯仿-甲醇),λmax279.0 nm,ESI-MS(neg.)m/z 507[2M–H]–;1H NMR(600 MHz,DMSO-d6)δ: 7.06(1H,s,H-3),6.66(1H,d,J=8.6 Hz,H-6),7.22(1H,d,J=8.6 Hz,H-7),8.15(2H,d,J=7.7 Hz,H-2',6'),7.60(3H,m,H-3',4',5'),9.70(1H,s,OH-8),11.90(1H,s,OH-5);13C NMR(150 MHz,DMSO-d6)δ:164.2(C-2),105.9(C-3),183.8(C-4),144.7(C-5),110.5(C-6),122.8(C-7),138.2 (C-8),151.8(C-9),111.1(C-10),131.2(C-1'),132.6(C-4'),129.5(C-3',5'),127.1(C-2',6')。經(jīng)結(jié)構(gòu)分析為5,8-dihydroxy flavone。
化合物4 分子式為C15H10O3,無(wú)色針晶(丙酮),ESI-MS(neg.)m/z 237[M–H]–;1H NMR (400 MHz,DMSO-d6)δ:7.12(1H,s,H-3),8.02 (1H,d,J=7.8 Hz,H-5),7.46(1H,t,J=7.6 Hz,H-6),7.79(1H,t,J=7.6 Hz,H-7),7.72(1H,d,J= 8.3 Hz,H-8),7.05(1H,d,J=8.3 Hz,H-3'),7.38 (1H,t,J=7.1 Hz,H-4'),6.99(1H,t,J=7.4 Hz,H-5'),7.90(1H,d,J=7.8 Hz,H-6'),10.69(1H,s,OH-2');13C NMR(100 MHz,DMSO-d6)δ:160.8(C-2),111.1(C-3),177.3(C-4),124.7(C-5),125.3 (C-6),134.2(C-7),118.5(C-8),155.8(C-9),123.2(C-10),117.7(C-1'),156.7(C-2'),117,1(C-3'),132.7(C-4'),119.5(C-5'),128.5(C-6')。以上數(shù)據(jù)與2'-hydroxy flavone[7]一致。
化合物5 分子式為C21H20O9,無(wú)色針晶(甲醇),245~246℃,λmax321.2nm和242.6nm,ESI-MS (neg.)m/z 415[M–H]–;1H NMR(600 MHz,DMSO-d6)δ:6.90(1H,s,H-3),8.02(1H,d,J=7.9 Hz,H-5),7.48(1H,t,J=7.1 Hz,H-6),7.79(1H,m,H-7),7.79(1H,m,H-8),7.55(1H,d,J=2.0 Hz,H-2'),7.24(1H,t,J=8.7 Hz,H-5'),7.56(1H,d,J=8.7 Hz,H-6'),9.10(1H,br s,OH-3'),4.87 (1H,d,J=7.2 Hz,H-1''),3.15~3.72(6H,為糖上質(zhì)子信號(hào));13C NMR(150 MHz,DMSO-d6)δ:162.6 (C-2),105.9(C-3),177.0(C-4),125.5(C-5),134.2(C-6),118.5(C-7),124.8(C-8),155.6(C-9),125.2(C-10),123.3(C-1'),113.6(C-2'),146.9 (C-3'),148.4(C-4'),116.0(C-5'),118.5(C-6'),101.2(C-1''),73.3(C-2''),77.3(C-3''),69.8(C-4''),75.9(C-5''),60.7(C-6'')。以上數(shù)據(jù)與3'-hydroxy-flavone-4'-O-β-D-glucopyranoside[4]一致。
1 Dong LL(董玲玲),Zhang QX(張啟翔).Research progress in cultivation and resources of Primula species.Shandong Agric Sci(山東農(nóng)業(yè)科學(xué)),2010,5:62-65.
2 Qu GL(曲功霖),Ouyang J(歐陽(yáng)捷),Kong DY(孔德云),et al.Chemical constituents of Primula maximowiczii regelpartⅡ.Chin Pharm J,2008,43:1300-1304.
3 Qu GL(曲功霖),Ouyang YJ(歐陽(yáng)捷),Kong DY(孔德云),et al.Chemical constituents of Primula maximowiczii regel.Chin Tradit Herb Drugs(中草藥),2007,38:1308-1310.
4 Zhang GQ(張桂秋),Bao X(包旭),Xiao ZY(肖倬殷). Studies on constituents of Primula faberi Oliver(II).West Chin J Pharm Sci(華西藥學(xué)雜志),1993,8:189-190.
5 Zhang GQ(張桂秋),Bao X(包旭),Xiao ZY(肖倬殷). Studies on constituents of Primula faberi Oliver(Ⅰ).West Chin J Pharm Sci(華西藥學(xué)雜志),1992,7:135-137.
6 Peng T(彭騰),Tu YQ(涂永勤),Deng Y(鄧赟),et al.Studies on chemical constituents of Primula sikkmensis Hook.J Chin Medi Mat(中藥材),2008,31:44-46.
7 Moon BH,Lee YS,Shin CS,et al.Complete assignments of the1H and13C NMR data of flavone derivatives.Bull Korean Chem Soc,2005,26:603-608.
Chemical Constituents of Primula sikkmensis Hook(Ⅱ)
PENG Teng1*,QIU Jian-ping1,DENG Yun1,TU Yong-qin21Chengdu University of TCM,State Key Laboratory Breeding Base of Systematic research,development and Utilization of Chinese Medicine Resources,the Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine,Chendu 611175,China;2Traditional Chinese Medicine Research Institute of Chongqing City,Chongqing 400066,China
Five known compounds were isolated from the Spend of Primula sikkmensis Hook.Their structures were elucidated as following based on spectral method:5-hydroxy flavone(1),2-phenyl-chromone(2),5,8-dihydroxy flavone (3),2'-hydroxy flavone(4),3'-hydroxy-flavone-4'-O-β-D-glucopyranoside(5),respectively.Compound 5 was isolated from this plant and compound 1-4 were isolated from genus Primula for the first time.The1H and13C NMR data of compound 3 were assigned for the first time.
Primula sikkmensis Hook;chemical constituents;flavone
1001-6880(2012)10-1385-03
2011-11-15 接受日期:2012-03-06
*通訊作者 Tel:86-013880376673;E-mail:pengteng1973@sina.com
R284.2
A