作者:Mark J Beard、Jonathan H Bailey、David T Cherry、Mark G Moloney、Sung Bo Shim、Kathryn A Statham、Mark J Bamford、R Brian Lamont
DOI:10.1016/0040-4020(96)00047-6
日期:1996.3
derived from bicyclic lactams 2a-c, prepared from (S)-pyroglutamic acid 1a, and subsequent reaction with a range of electrophiles, is reported. Exo-diastereoselectivity is generally favoured. The deprotection of some of these adducts to give functionalised hydroxymethylpyrrolidinones is readily achieved by simple hemiaminal ether cleavage under acidic conditions.
报道了由(S)-焦谷氨酸1a制备的双环内酰胺2a-c衍生的内酰胺烯酸酯的产生,以及随后与一系列亲电试剂的反应。Exo-非对映选择性通常是有利的。通过在酸性条件下简单的半胺醚裂解,可以容易地实现其中一些加合物的脱保护,以得到官能化的羟甲基吡咯烷酮。