为了进一步研究玄参科长舟马先蒿的化学成分,我们从其全草的乙醇提取物中分离得到1个新环烯醚萜苷和12个已知化合物。根据波谱数据(1D,2D-NMR,HSQC,HMBC,ROESY,MS)分别鉴定为gardoside methylester(1)、7-O-acetylgardoside methyl ester(2)、verbascoside(3)、leucosceptoside A(4)、jionoside D(5)、martynoside(6)、2″-O-acetylmartynoside(7)、uridine(8)、adenosine(9)、benzyl alcohol-O-β-D-xylopyranosyl-(1→2)-β-D-gluco-pyranoside(10)、2-phenylethyl O-β-D-xylopyranosyl-(1→2)-β-D-glucopyranoside(11)、apigenin(12)、lariciresinol-4′-O-β-D-glucopyranoside(13),其中7-O-acetylgardoside methyl ester(2)为一个新化合物。
To study further the chemical constituents from the ethanol extract of the whole plants of Pedicularis dolichocymba Hand. -Mazz. (Scrophulariaceae) ,one new iridoid glycoside ,7-O-acetylgardoside methyl ester(2) was isolated, together with twelve known compounds ,gardoside methyl ester( 1 ), verbascoside (3) , leueosceptoside A (4) , jionoside D ( 5), martynoside ( 6 ), 2"-O-acetylmartynoside ( 7 ), uridine (8), adenosine (9), benzyl alcohol-O-β-D-xylopyranosyl- ( 1→2) -β-D-glucopyranoside ( 10), 2-phenylethyl O-β-D-xylopyranosyl- ( 1→2 ) -β-D-glucopyranoside ( 11 ), apigenin ( 12 ) and lariciresinol-4'-O-β-D-glucopyranoside(13). Structures of compounds 1-13 were elucidated mainly based on NMR (HSQC ,HMBC and ROESY)and MS evidence.