A Diels-Alder Reaction for the Total Synthesis of the Novel Antibiotic Antitumor Agent Mensacarcin
作者:Lutz F. Tietze、Carlos Güntner、Kersten M. Gericke、Ingrid Schuberth、Gabor Bunkoczi
DOI:10.1002/ejoc.200400826
日期:2005.6
The antibiotic mensacarcin (1), which contains nine stereogenic centers and two epoxy functionalities, is a novel antitumor agent that was first isolated from the culture broth of Streptomyces sp. Go C4/4 found in a soil sample next to the northern cafeteria of the University of Gottingen. For the synthesis of 1 and related structurally simplified analogs, aDiels–Alder reaction of O-methyljuglone (11)
抗生素mensacarcin (1) 包含九个立体中心和两个环氧官能团,是一种新型抗肿瘤剂,首先从 Streptomyces sp. 的培养液中分离出来。在哥廷根大学北部自助餐厅旁边的土壤样本中发现了 Go C4/4。为了合成 1 和相关结构简化的类似物,进行 O-甲基胡桃酮 (11) 和四取代的 1,3-丁二烯 22 的狄尔斯-阿尔德反应,得到环加合物 rac-28,然后将其转化为环氧化物 rac-31和 rac-33。rac-33 的细胞毒性仅比复杂得多的 1 低 53 倍。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)