Acid-Promoted Rearrangements ofN-Substituted 8-Oxa-3-azatricyclo[3.2.1.02?4] octane-6,7-dicarboxylates: Remote Substituent Effects on the Regioselectivity of theN-Acylaziridine/Dihydrooxazone Rearrangement
作者:Susy Allemann、Jean-Louis Reymond、Pierre Vogel
DOI:10.1002/hlca.19900730316
日期:1990.5.2
N-benzoylaziridine 16 was rearranged quantitatively into dimethyl (1RS,2SR,26SR,67SR,7SR,8SR,9SR)-4-phenyl-5,10-dioxa-3-azatricyclo[4.3.1.02′7] dec-3-ene-8,9-dicarboxylate(31), and 19 into dimethyl (1RS,2SR,26SR,67SR,7SR,8SR,9SR)-4-phenyl-3,10-dioxa-5-azatricyclo [5.2.1.02′6] dec-4-ene-8,9-di-carboxylate (65). Possible mechanisms of these highly selective reactions and rearrangements are discussed.
二甲基(1 RS,2 SR,4 RS,5 SR,6 SR,7 RS)-和二甲基(1 RS,2 SR,4 RS,5 SR,6 RS,7 SR)-8-oxa-3的制备氮杂三环[3; 2.1.0 24 ]辛烷-6,7-二羧酸二甲酯15和18,RESP)和它们的N-(叔-butyloxy)羰基(14,17)和V-苯甲酰(16,19)的衍生物被描述。用亲核酸(HCl,HBr。AÇ OH)的的外,外切-diesters 14和16,得到相应的产品23-27氮丙啶反-addition的,所述外,内切-diesters 17和19引导到相应的氨基内酯63(甲基(1个RS,2 RS,3 SR,6 RS,7 SR,9 RS)-2-[[(叔丁氧基)羰基]氨基} -5-氧代-4,8-二氧三环[4.2.1.0 37 ]壬烷-9-羧酸盐)和64(甲基(1 RS,2RS,3 SR,6 RS,7 SR,9 SR)-2-(苯甲酰氨基)-5-氧代-4