Synthetic studies on the azinothricin family of antitumour antibiotics. 5. Asymmetric synthesis of two activated esters for the northern sector of A83586C
作者:Karl J. Hale、Jiaqiang Cai
DOI:10.1016/0040-4039(96)00804-0
日期:1996.6
An asymmeric synthesis of the activated esters 20 and 21 is reported. Both molecules equate with the C(28)–C(47) region of A83586C, and contain functionality appropriate for future unification with the hexapeptide unit. A useful new reaction is described for converting a methyl ester directly into a thioethyl or HOBT ester that operates under very mild conditions.
报道了活化酯20和21的不对称合成。这两个分子均等同于A83586C的C(28)–C(47)区域,并包含适合将来与六肽单元统一的功能。描述了一种有用的新反应,用于将甲酯直接转化为在非常温和的条件下运行的硫代乙基酯或HOBT酯。