220623-04-1Relevant articles and documents
Cyclopropanation reactions of pyroglutamic acid-derived synthons with akylidene transfer reagents
Zhang, Rui,Mamai, Ahmed,Madalengoitia, Jose S.
, p. 547 - 555 (2007/10/03)
The cyclopropanation of unsaturated lactams 1 and 3 derived from pyroglutamic acid with nucleophilic alkylidene transfer reagents is investigated. Good-to-modest yields of cyclopropanes were obtained with most sulfur ylides explored. Syn/anti selectivity was found to be dependent on the synthon as well as the sulfur ylide. This cyclopropanation methodology is used in the synthesis of arginine and glutamic acid analogues.