The pungent principle of myoga (Zingiber mioga Roscoe) was identified as (E)-8β(17)-epoxylabd-12-ene-15,16-dial (miogadial) on the basis of its physical and spectroscopic properties (MS, NMR, IR, and UV). Galanal A and B, isolated as well as miogadial, had no hot taste. Reduced miogadial also was tasteless. The pungency of miogadial depended on the presence of αβ-unsaturated-1,4-dialdehyde group.
根据其物理和光谱特性(质谱、核磁共振、红外光谱和紫外光谱),确定绵羊草(Zingiber mioga Roscoe)的辛辣成分为 (E)-8β(17)-epoxylabd-12-ene-15,16-dial (miogadial)。分离出的伽兰醛 A 和 B 以及 miogadial 没有辣味。还原的 miogadial 也没有味道。miogadial 的辛辣味取决于 αβ 不饱和-1,4-二醛基团的存在。
Kimbu,S.F. et al., Journal of the Chemical Society. Perkin transactions I, <hi>1979</hi>, p. 1303 - 1304
作者:Kimbu,S.F. et al.
DOI:——
日期:——
Total synthesis of (±)-(E)-8β,17-epoxylabd-12-ene-15,16-dial
作者:Tong Hei Kim、Sachihiko Isoe
DOI:10.1039/c39830000730
日期:——
The title labdanoid dialdehyde (10) which has high antifungal activity was synthesized stereoselectively from the trans-decalone derivative (1).
具有高抗真菌活性的标题拉丹酰二醛(10)是从反式十烯酮衍生物(1)立体选择性地合成的。
A Novel Labdane-Type Trialdehyde from Myoga (<i>Zingiber mioga</i>Roscoe) That Potently Inhibits Human Platelet Aggregation and Human 5-Lipoxygenase
We screened myoga extracts for inhibitors of human platelet aggregation and human 5-lipoxygenase. We identified a novel labdane type of diterpene, together with three known diterpenes (miogadial and galanals A and B) from the flower buds of myoga. Spectroscopic data indicated the structure of the new compound to be 12(E)-labdene-15,16,(8β)17-trial (miogatrial). Miogatrial and miogadial were potent inhibitors of human platelet aggregation and human 5-lipoxygenase (5-LOX). The sesquiterpene, polygodial, also exhibited strong inhibitory activity against human platelet aggregation and 5-LOX. On the other hand, galanals A and B did not have inhibitory activity in either experimental system. It thus appears that a 3-formyl-3-butenal structure was essential for the potent inhibition of human platelet aggregation and human 5-LOX.
我们对桃花心木提取物进行了筛选,以寻找人体血小板聚集抑制剂和人体 5-脂氧合酶抑制剂。我们从桃花心木的花蕾中发现了一种新型拉布旦类二萜,以及三种已知的二萜(miogadial 和 galanals A 和 B)。光谱数据表明,新化合物的结构是 12(E)-labdene-15,16,(8β)17-trial (miogatrial)。Miogatrial 和 miogadial 是人体血小板聚集和人体 5-脂氧合酶(5-LOX)的强效抑制剂。倍半萜类化合物 polygodial 对人体血小板聚集和 5-LOX 也有很强的抑制作用。另一方面,伽蓝醛 A 和 B 在两种实验系统中都没有抑制活性。由此看来,3-甲酰基-3-丁烯醛结构是有效抑制人体血小板聚集和人体 5-LOX 的必要条件。