Cyclobutane exists predominantly in a " butterfly " conformation.环丁烷主要成 “ 蝶式 ” 构象存在.On the other hand , cyclobutane pyrimidine dimmer ( CPD ) just has an effect of cell cycle arrest.而CPD光 产物 ( cyclobutanepyrimidinedimmer...
FDA批准 美法仑 ( 左旋苯丙氨酸氮芥 ) 上市.Melphalan ( L - PAM ) is approved by FDA for marketing.在合成工作中发现:在NAE18与氮芥芳基磷酰氯的反应过程中, 4- 二甲氨基吡啶 ( DMAP ) 起着关键性的催化作用.In the reaction of NAE 18 with nitrogen mustard aryl phosphorochloridate, 4 - ...