Benzothiazines in Synthesis. Toward the Synthesis of Pseudopteroxazole
作者:Michael Harmata、Xuechuan Hong、Charles L. Barnes
DOI:10.1021/ol049334+
日期:2004.6.1
was prepared in a straightforward fashion via a completely stereoselective intramolecular Friedel-Crafts alkylation. This compound represents a potential precursor to the antitubercular agent, pseudopteroxazole. Its synthesis proceeded via a completely selective, intramolecular addition of a sulfoximine-stabilized carbanion to an alpha,beta-unsaturated ester, followed by functional group manipulations
[反应:见正文]通过完全立体选择性的分子内Friedel-Crafts烷基化反应以直接方式制备三环苯并噻嗪15。该化合物代表抗结核药假pteroxoxazole的潜在前体。它的合成过程是通过将磺胺嘧啶稳定的碳负离子完全选择性地分子内添加到α,β-不饱和酯中进行的,然后进行官能团操作。