作者:Taro Sato、Sakae Aoyagi、Chihiro Kibayashi
DOI:10.1021/ol030088w
日期:2003.10.1
text] The enantioselective total syntheses of (+)-azimine and (+)-carpaine have been developed, starting with (S)-1,2,4-butanetriol as a single source of chirality. The key common feature in these syntheses involves stereoselective intramolecular hetero-Diels-Alder reaction of an acylnitroso compound. The critical macrocyclic dilactonization of the N-Cbz derivatives of azimic acid and carpamic acid
[反应:见正文]从(S)-1,2,4-丁三醇为单一手性来源开始,开发了(+)-叠氮基和(+)-卡巴因的对映选择性总合成物。这些合成中的关键共同特征涉及酰基亚硝基化合物的立体选择性分子内异Diels-Alder反应。通过使用Yamguchi大环化条件有效地实现了叠氮酸和氨基甲酸的N-Cbz衍生物的关键大环二内酯化。