烯丙基三丁基锡 、
3-[(2R,3S)-3-(tert-Butyl-dimethyl-silanyloxy)-tetrahydro-pyran-2-yloxy]-propionaldehyde 在
4 A molecular sieve 、 magnesium bromide 作用下,
生成 (R)-1-[(2R,3S)-3-(tert-Butyl-dimethyl-silanyloxy)-tetrahydro-pyran-2-yloxy]-hex-5-en-3-ol 、 (S)-1-[(2R,3S)-3-(tert-Butyl-dimethyl-silanyloxy)-tetrahydro-pyran-2-yloxy]-hex-5-en-3-ol