RCM/PCC oxidation strategy for synthesis of functionalized cyclic α,β-unsaturated lactones: synthesis of (+)-triacetoxygoniotriol and its diastereomers
摘要:
A novel methodology leading to the synthesis of (+)-triacetoxygoniotriol 2 from D-glucose is described. Construction of the core six-membered alpha, beta-unsaturated lactone moiety involved ring closing metathesis (RCM) followed by a PCC oxidation. Later exploiting the pseudo-symmetry of D-glucose three other diastereomers of triacetoxygoniotriol were synthesized using the developed methodology. (c) 2006 Elsevier Ltd. All rights reserved.
RCM/PCC oxidation strategy for synthesis of functionalized cyclic α,β-unsaturated lactones: synthesis of (+)-triacetoxygoniotriol and its diastereomers
摘要:
A novel methodology leading to the synthesis of (+)-triacetoxygoniotriol 2 from D-glucose is described. Construction of the core six-membered alpha, beta-unsaturated lactone moiety involved ring closing metathesis (RCM) followed by a PCC oxidation. Later exploiting the pseudo-symmetry of D-glucose three other diastereomers of triacetoxygoniotriol were synthesized using the developed methodology. (c) 2006 Elsevier Ltd. All rights reserved.
Stereoselective total synthesis of styryl-lactones: (+)-crassalactones B and C, (+)-howiionol A, (+)-tricinnamate, (+)-goniofufurone and (+)-dicinnamoyl goniofufurone
作者:Gangavaram V.M. Sharma、Samala Mallesham
DOI:10.1016/j.tetasy.2010.10.016
日期:2010.11
The total synthesis of (+)-crassalactone B (+)-crassalactone C (+)-howiionol A (+)-tricinnamate (+)-goniofufurone and (+)-dicinnamoyl goniofufurone is achieved by a chit-on approach starting from diacetone D-glucose (DAG) Mitsunobu inversion Wittig olefination and ring closing metatheses were used as key steps for (+)-howiionol A and (+)-tricinnamate Meldrum s acid was used for the synthesis of (+)-crassalactone C (+)-goniofufurone and (+)-dicinnamoyl goniofufurone Yamaguchi esterification was used for (+)-crassalactone B while a Grignard reaction followed by concomitant deallylation was first reported in the synthesis of (+)-dicinnamoyl goniofufurone (C) 2010 Elsevier Ltd All rights reserved
RCM/PCC oxidation strategy for synthesis of functionalized cyclic α,β-unsaturated lactones: synthesis of (+)-triacetoxygoniotriol and its diastereomers
作者:G.S.C. Srikanth、Urlam Murali Krishna、Girish K. Trivedi、John F. Cannon
DOI:10.1016/j.tet.2006.09.016
日期:2006.11
A novel methodology leading to the synthesis of (+)-triacetoxygoniotriol 2 from D-glucose is described. Construction of the core six-membered alpha, beta-unsaturated lactone moiety involved ring closing metathesis (RCM) followed by a PCC oxidation. Later exploiting the pseudo-symmetry of D-glucose three other diastereomers of triacetoxygoniotriol were synthesized using the developed methodology. (c) 2006 Elsevier Ltd. All rights reserved.