Baimantuoluosides A - C, Three New Withanolide Glucosides from the Flower of<i>Datura metel</i>L.
作者:Haixue Kuang、Bingyou Yang、Ling Tang、Yonggang Xia、Deqiang Dou
DOI:10.1002/hlca.200800404
日期:2009.7
In search for bioactive compounds from the flower of Datura metel L., three new withanolide glucosides, namely baimantuoluosides A, B, and C (1–3, resp.) were isolated. Enzymatic hydrolysis of 1–3 afforded the corresponding aglycones 1a, 2a, and 3a, respectively. The structures of the new compounds were elucidated as (5α,6α,7α,12β,22R)‐5,12‐dihydroxy‐1,26‐dioxo‐6,7 : 22,26‐diepoxyergosta‐2,24‐dien‐27‐yl
在搜索从的花的生物活性化合物洋金花L.,三个新的睡茄交酯糖苷,即baimantuoluosides A,B,和C(1 - 3。,RESP)中分离得到。的酶促水解1 - 3,得到相应的糖苷配基1A,2A和3A分别。新化合物的结构分别鉴定为(5 α,6 α,7 α,12 β,22 - [R)-5,12二羟基1,26二氧代-6,7-:22,26-diepoxyergosta-2, 24二烯27基β - d吡喃葡萄糖苷(1),(5 α,6 α,7 α,12 α,22 - [R)-5,12二羟基1,26二氧代-6,7-:22,26-diepoxyergosta-2,24二烯27基β - d吡喃葡萄糖苷(2),(5 α,6 α,7 α,22 - [R)-5-羟基1,26二氧代-6,7-:22,26-diepoxyergosta-2,24二烯27基β - d ‐吡喃吡喃糖苷(3)在化学和物理化学证据的基