申请人:——
公开号:US20040018598A1
公开(公告)日:2004-01-29
The present invention relates to compounds made by a subset of modules from one or more polyketide synthase (“PKS”) genes that are used as starting material in the chemical synthesis of novel molecules, particularly naturally occurring polyketides or derivatives thereof. The biologically derived intermediates (“bio-intermediates”) generally represent particularly difficult compounds to synthesize using traditional chemical approaches due to one or more stereocenters. In one aspect of the invention, an intermediate in the synthesis of epothilone is provided that feeds into the synthetic protocol of Danishefsky and co-workers. In another aspect of the invention, intermediates in the synthesis of discodermolide are provided that feed into the synthetic protocol of Smith and co-workers. By taking advantage of the inherent stereochemical specificity of biological processes, the syntheses of key intermediates and thus the overall syntheses of compounds like epothilone and discodermolide are greatly simplified.
本发明涉及由一个或多个聚酮合酶合成酶(“PKS”)基因的子模块制备的化合物,这些化合物作为起始物质用于化学合成新颖分子,特别是天然存在的聚酮类化合物或其衍生物。生物衍生的中间体(“生物中间体”)通常代表着尤其难以使用传统化学方法合成的化合物,因为其中一个或多个立体中心。在本发明的一个方面,提供了用于累积素合成的中间体,该中间体进入Danishefsky及其同事的合成方案。在本发明的另一个方面,提供了用于二十碳二烯酮合成的中间体,这些中间体进入Smith及其同事的合成方案。通过利用生物过程固有的立体化学特异性,关键中间体的合成以及诸如累积素和二十碳二烯酮等化合物的整体合成大大简化了。