Stereoselective synthesis of sphinganine by means of modified asymmetric borane reduction
作者:Moriyasu Masui、Takayuki Shioiri
DOI:10.1016/s0040-4039(98)01020-x
日期:1998.7
Efficient stereoselectivesynthesis of sphinganine by the asymmetric borane reduction of α-oxoketoxime trityl ethers is described. Both threo and erythro sphinganine could be obtained with high enantioselectivities by using borane-N,N-diethylaniline complex as a reducing agent.
concise, enantioselective total synthesis of symbioramide, starting from simple achiral compounds and racemic α-amino-β-keto esterderivatives is reported. This highly flexible strategy allowed the efficient preparation of seven structural isomers of the natural product as well. The synthesis relies on a convergent route that involves the efficient stereoselective reduction of a α-keto-β-yne ester, and