Organosilanes in Synthesis: Application to an Enantioselective Synthesis of Methyl-l-callipeltose
摘要:
[GRAPHIC]Methyl-L-callipeltose, the carbohydrate associated with callipeltoside A, has been synthesized in eight steps and 23% overall yield from enantioenriched allylsilane 6 and acetaldehyde. The key steps are a highly diastereoselective formal [4 + 2] annulation and a Cr(Vi)-catalyzed oxidative C-C bond cleavage to produce lactone 11.
Organosilanes in Synthesis: Application to an Enantioselective Synthesis of Methyl-l-callipeltose
摘要:
[GRAPHIC]Methyl-L-callipeltose, the carbohydrate associated with callipeltoside A, has been synthesized in eight steps and 23% overall yield from enantioenriched allylsilane 6 and acetaldehyde. The key steps are a highly diastereoselective formal [4 + 2] annulation and a Cr(Vi)-catalyzed oxidative C-C bond cleavage to produce lactone 11.
Organosilanes in Synthesis: Application to an Enantioselective Synthesis of Methyl-<scp>l</scp>-callipeltose
作者:Hongbing Huang、James S. Panek
DOI:10.1021/ol034582b
日期:2003.5.1
[GRAPHIC]Methyl-L-callipeltose, the carbohydrate associated with callipeltoside A, has been synthesized in eight steps and 23% overall yield from enantioenriched allylsilane 6 and acetaldehyde. The key steps are a highly diastereoselective formal [4 + 2] annulation and a Cr(Vi)-catalyzed oxidative C-C bond cleavage to produce lactone 11.