The chemistry of O-silylated ketene acetals: Synthesis of N-benzoyl-L-daunosamine.
作者:Yasuyuki KITA、Fumio ITOH、Osamu TAMURA、Ya Yuan KE、Takashi MIKI、Yasumitsu TAMURA
DOI:10.1248/cpb.37.1446
日期:——
N-Benzoyl-L-daunosamine was synthesized with high stereoselectivity utilizing a 1, 3-addition of ketene silyl acetal to the chiral nitrone, (Z)-[(4S, 5S)-2, 2, 5-trimethyl-1, 3-dixolan-4-yl]methylene[(1S)-1-phenylethyl]amine N-oxide, followed by a silyl group-transfer reaction in acetonitrile under mild conditions.
利用亚甲基双环氧化物对N-氧化-手性硝酮的1,3-加成反应,成功合成了高立体选择性的N-苯甲酰基-L-柔红胺,随后在温和条件下于乙腈中通过硅基转移反应完成制备。