has been developed, starting from the readily available (1E,3E)-1,4-bis(trimethylsilyl)-1,3-butadiene and (3E)-1,4-bis(trimethylsilyl)-3-buten-1-yne. A simple epoxidation reaction, followed by regioselective α-opening of the epoxide ring by metal halides affords the corresponding halohydrins with a high degree of stereoselectivity. A subsequent β-elimination reaction from these compounds leads to (Z
A new synthetic approach to various conjugated (EE) dienamides has been developed, starting from an easily accessible bifunctional dienyl compound and based upon a double selective electrophilic substitution, followed by coupling reactions.
Stereoselective total synthesis of (S)-Virol C and (S)-1-dehydroxyvirol A
A stereoselective total synthesis of (S)-Virol C and (S)-1-dehydroxyvirol A has been developed, based upon the selective and sequential substitution of the two trimethylsilyl groups of readily available 1,4-bis(trimethylsilyl)-1,3-butadiyne. (c) 2005 Elsevier Ltd. All rights reserved.