Isoselenocyanates derived from amino acid esters: an expedient synthesis and application to the assembly of selenoureidopeptidomimetics, unsymmetrical Selenoureas and selenohydantoins
作者:Hosahalli P. Hemantha、Vommina V. Sureshbabu
DOI:10.1002/psc.1276
日期:2010.11
all the isoselenocyanates havebeen isolated as stable ones after chromatographic purification. These hitherto unreported classes of molecules would be useful building blocks for the preparation of variety of selenium containing peptidomimetics. In this study, the utility of the title molecules in the preparation of selenoureidopeptidomimetics 6, unsymmetrical selenoureas 8 and selenohydantoins 10 isdemonstrated
Facile one-pot synthesis of 2-amino-1,3,4-oxadiazole tethered peptidomimetics by molecular-iodine-mediated cyclodeselenization
作者:L. Santhosh、C. Srinivasulu、S. Durgamma、Girish Prabhu、Vommina V. Sureshbabu
DOI:10.1039/c7nj02278f
日期:——
Synthesis of 2-amino-1,3,4-oxadiazole tethered peptidomimetics through the reaction of Nα-protected amino acid hydrazides with isoselenocyanato esters in one- pot is described. The molecular-iodine-mediated cyclodeselenization of in situ generated selenosemicarbazide intermediates resulted in the facile formation of 2-amino-1,3,4-oxadiazoles under mild conditions in excellent yields. The method employs