Enantioselective Synthesis for the (−)-Antipode of the Pyrazinone Marine Alkaloid, Hamacanthin A
作者:Biao Jiang、Cai-Guang Yang、Jun Wang
DOI:10.1021/jo010265b
日期:2001.7.1
A short enantioselective total synthesis for the (-)-antipode of the antifungal marine alkaloid, hamacanthin A, (6R)-3,6-bis(6-bromoindol-3-yl)-5,6-dihydro-2(1H)-pyrazinone, is described. This synthesis proceeds through the coupling of 3-indolyl-alpha-oxoacetyl chloride and 3-indolyl azidoethylamine, followed by intramolecular aza-Wittig type cyclization. A concise and useful approach for the synthesis
一种短的对映选择性全合成的抗真菌海洋生物碱,卵磷脂A,(6R)-3,6-双(6-bromoindol-3-yl)-5,6-dihydro-2(1H)的(-)-正肽描述了吡嗪酮。该合成通过3-吲哚基-α-氧代乙酰氯和3-吲哚基叠氮基乙胺的偶联进行,随后进行分子内氮杂-Wittig型环化。还提出了使用Sharpless不对称二羟基化反应然后进行立体定向叠氮化合成(1R)-1-(吲哚-3-基)-2-叠氮基乙胺的简洁实用的方法。