A Facile Method for the Preparation of MOM-Protected Carbamates
作者:David M. Barnes、Jufang Barkalow、Daniel J. Plata
DOI:10.1021/ol8022769
日期:2009.1.15
A novel method for the preparation of MOM-protected carbamates is described that avoids the use of MOM-Cl, a regulated carcinogen. The two-step, one-pot procedure generates a reactive N-chloromethyl carbamate that is quenched with methanol to afford MOM-protected carbamates. The process is tolerant of a variety of functionalities, including Boc, sulfonamide, and acetamide protecting groups. Mild conditions for the removal of the MOM group are also described; selective deprotection of the MOM group in the presence of a Boc group has been demonstrated.
Synthesis of the “tricyclic heart” of manzamines
作者:Karel M.J. Brands、Upendra K. Pandit
DOI:10.1016/s0040-4039(00)99482-6
日期:1989.1
BRANDS, KAREL M. J.;PANDIT, UPENDRA K., TETRAHEDRON LETT., 30,(1989) N1, C. 1423-1426
作者:BRANDS, KAREL M. J.、PANDIT, UPENDRA K.
DOI:——
日期:——
Synthesis of the homochiral “tricyclic heart” of manzamine A
作者:Karel M.J. Brands、Arthur A.P. Meekel、Upendra K. Pandit
DOI:10.1016/s0040-4020(01)96112-5
日期:1991.3
An expedient and enantiospecific synthesis of a strategically functionalized tricyclic intermediate for the construction of manzamine A is described.