purity by the asymmetric conjugate addition of pyrazolidine to optically active vinyl sulfoxides, t-butyl (E)-2-[(R)- and (S)-p-tolylsulfinyl]cinnamates, respectively. Starting from 7, a synthesis of optically active homaline was achieved.
(S)- 和 (R)-4-phenyl-1,5-diazacyclooctan-2-ones (7) 的两种对映异构体均通过
吡唑烷与旋光
乙烯基亚砜的不对称共轭加成以立体选择性合成,具有良好的光学纯度,t- (E)-2-[(R)-和(S)-p-
甲苯基亚磺酰基]
肉桂酸丁酯,分别。从7开始,合成了具有光学活性的homaline。