摘要 用 GC-MS 分析小麦 (cv Maris Huntsman) 成熟谷物的提取物,发现含有两种赤霉素和 1β,2β-邻二醇,即 GA 79 和一种新赤霉素,2β-羟基GA 61 。新 GA 代谢物的结构通过与 GA 7 甲酯分九步制备的合成样品进行比较得到确认,GA 7 甲酯的总产率为 15%,并指定了 GA 编号 GA 90。描述了通向 GA 79 和 GA 90 的合成路线。
Stereoselectivity of osmylation reactions: synthesis of gibberellins A78 and A79
作者:Christine L Willis
DOI:10.1016/s0040-4039(00)97085-0
日期:1990.1
The influence of allylic oxy- and acyloxy- substituents on the stereoselectivity of osmium tetroxide oxidations of ring A unsaturated gibberellin derivatives is described. The results are applied to the synthesis of the methyl esters of two new trihydroxylated gibberellins GA78 (1) and GA79 (3).