Highly stereoselective total synthesis of tylonolide, the aglycon of the 16-membered macrolide antibiotic tylosin. I. Construction of the C-1-C-8 chiral centers.
作者:TATSUYOSHI TANAKA、YUJI OIKAWA、TATSUO HAMADA、OSAMU YONEMITSU
DOI:10.1248/cpb.35.2209
日期:——
In order to synthesize tylonolide, the aglycon of the 16-membered macrolide antibiotic tylosin, a Prelog-Djerassi lactone-type compound (4) corresponding to the C-1-C-9 segment was synthesized from D-glucose. Benzyl-type protecting groups for hydroxy functions, such as benzyl, 4-methoxybenzyl, and 3, 4-dimethoxybenzyl groups, as well as some cyclic and acyclic stereocontrolled reactions, such as hydroboration, catalytic hydrogenation, and Grignard reaction, were successfully employed.
为了合成 16 元大环内酯抗生素泰洛新的苷元--泰洛内酯,以 D-葡萄糖为原料合成了与 C-1-C-9 段相对应的 Prelog-Djerassi 内酯型化合物 (4)。该化合物成功地采用了苄基、4-甲氧基苄基和 3,4-二甲氧基苄基等苄基型羟基保护基团,以及一些环状和非环状立体控制反应,如氢硼化反应、催化氢化反应和格氏反应。