Conformation-Enabled Total Syntheses of Ohmyungsamycins A and B and Structural Revision of Ohmyungsamycin B
作者:Joonseong Hur、Jaebong Jang、Jaehoon Sim、Woo Sung Son、Hee-Chul Ahn、Tae Sung Kim、Yern-Hyerk Shin、Changjin Lim、Seungbeom Lee、Hongchan An、Seok-Ho Kim、Dong-Chan Oh、Eun-Kyeong Jo、Jichan Jang、Jeeyeon Lee、Young-Ger Suh
DOI:10.1002/anie.201711286
日期:2018.3.12
The first total syntheses of the bioactive cyclodepsipeptides ohmyungsamycin A and B are described. Key features of our synthesis include the concise preparation of a linear cyclization precursor that consists of N‐methyl amides and non‐proteinogenic amino acids, and its macrolactamization from a bent conformation. The proposed structure of ohmyungsamycin B was revised based on its synthesis. The cyclic
描述了生物活性环二肽欧姆龙霉素A和B的第一批合成。我们合成的关键特征包括简明的线性环化前体的制备,该线性环化前体由N-甲基酰胺和非蛋白原性氨基酸组成,以及从弯曲构象中的大内酰胺化作用。欧姆龙霉素B的拟议结构根据其合成进行了修订。已显示欧姆龙霉素的环状核心负责出色的抗结核活性,并评估了具有截短链的欧姆龙霉素变体的生物学活性。