Asymmetric Synthesis of Calyculin C. 2. Synthesis of the C<sub>26</sub>−C<sub>37</sub> Fragment and Model Wittig Couplings
作者:Anthony K. Ogawa、John A. DeMattei、Gerard R. Scarlato、John E. Tellew、Lee S. Chong、Robert W. Armstrong
DOI:10.1021/jo960315q
日期:1996.1.1
We report our synthesis of the C(26)-C(37) fragment of serine/threonine protein phosphatase PP1 and PP2A inhibitor calyculin C (1). Outlined in this paper are synthetic approaches to the two components based on disconnection at the C(33)-N(3) amide bond. We report the successful synthesis of the C(33)-C(37) aza-sugar derived from D-lyxose which was coupled onto a C(26)-C(32) aminooxazole originating
我们报告了丝氨酸/苏氨酸磷酸酶PP1和PP2A抑制剂calyculin C(1)的C(26)-C(37)片段的合成。本文概述了基于C(33)-N(3)酰胺键断开的两种成分的合成方法。我们报告成功合成的C(33)-C(37)氮杂糖衍生自D-lyxose,它偶联到源自L-焦谷氨酸的C(26)-C(32)氨基恶唑上。精细化生成的酰胺到calyculin C的完全脱保护的C(26)-C(37)片段完成了我们的合成。这提供了用于维蒂希烯化反应以连接天然产物的两半的合适的phospho盐。