Syntheses of (−)-hygrine and (−)-norhygrine via Wacker oxidation
作者:Mahesh S. Majik、Santosh G. Tilve
DOI:10.1016/j.tetlet.2010.03.098
日期:2010.5
Hygrine is an important biosynthetic intermediate for tropane alkaloids. A synthesis of (−)-hygrine starting from l-proline is described. The acetonyl side chain of hygrine was fashioned through the Wittig reaction followed by regioselective Wacker oxidation. In addition, this Letter provides the first synthesis of (−)-norhygrine.
Synthesis of (−)-hygrine, (−)-norhygrine, (−)-pseudohygroline and (−)-hygroline via Nef reaction
作者:Chinmay Bhat、Santosh G. Tilve
DOI:10.1016/j.tetlet.2011.09.118
日期:2011.12
Synthesis of tropane alkaloids (-)-hygrine, (-)-norhygrine and sedum alkaloids (-)-pseudohygroline and (-)-hygroline is described from L-proline via Henry and Nef reactions. (C) 2011 Elsevier Ltd. All rights reserved.