瑞舒非生成素的名称被提议用于Ch'an Su的非晶形富博生成素,以前被称为“异丁法林”,迄今为止仅以结晶衍生物的形式被分离出来。-描述了由结晶的盐酸盐制备纯的,无定形的瑞波夫原素的方法,以及结晶的乙酸瑞波夫原素乙酸盐的氧化降解。迄今的结果表明,瑞波夫菌素(C 24 H 32 O 4)的4个氧原子中有2个在cumalin环中,一个为仲HO基团,第四个为氧化环。
Zur Konstitution des Marinobufagins, III. Mitteilung. Über Krötengifte, 18. Mitteilung
作者:Herbert Schröter、Richard Rees、Kuno Meyer
DOI:10.1002/hlca.19590420502
日期:——
On the basis of new degradation work it is shown that Marinobufagin is 3β,5-Di-hydroxy-14β, 15β-epoxy-5β-bufa-20,22-dienolide. At the same time the structure of the degradation products, which were described in our previous communication on this subject, could be elucidated.
3-epi-Bufadienolides with unique structures and lower toxicities have been isolated from toad bile. A short-chain dehydrogenase/reductase, HSE-1, was cloned from a toad liver cDNA library and verified to regulate the epimerization of bufadienolides.
Cytochrome P450 Mining for Bufadienolide Diversification
作者:Xiaolai Lei、Xiaozheng Wang、Weiliang Xiong、Han Xiao、Yingchun Wu、Tingting Huang、Rubing Liang、Yiming Li、Shuangjun Lin
DOI:10.1021/acschembio.4c00089
日期:——
active bufadienolides with diverse modifications and trace content. In this work, based on the transcriptome and genome analyses, using a yeast-based screening platform, we obtained eight cytochrome P450 (CYP) enzymes from toads, which catalyze the hydroxylation of bufalin and resibufogenin at different sites. Moreover, a reported fungal CYP enzyme Sth10 was found functioning in the modification of bufalin