Synthetic studies on the rhizoxins. II. An approach to the C10C26 subunit using “substrate directed” allylstannane additions to aldehydes
作者:Gary E Keck、Kenneth A Savin、Michael A Weglarz、Erik N.K Cressman
DOI:10.1016/0040-4039(96)00578-3
日期:1996.5
The construction of a C10C26 fragment of the 16-membered antitumor macrolide rhizoxin has been achieved in an efficient manner. The central portion of this molecule has been prepared in enantiopure form via an iterative allylstannylation protocol starting with the ester of (R)-lactic acid. The oxazole portion of rhizoxin was attached via a samarium diiodide modified Julia coupling to generate the
一个C的结构10 C 26的16-元大环内酯抗肿瘤根瘤菌素片段具有以有效的方式实现。该分子的中心部分已通过对映异构纯的形式,从(R)-乳酸的酯开始,通过重复的烯丙基甲磺酰化方法制备。经由二碘化sa改性的Julia偶联连接了根霉菌素的恶唑部分,以产生所需的全部E三烯。