In a new type of enzyme bound 5-deazaflavin model (1), hydrogen incorporation occurred exclusively at the pseudoequatorial position at C(5) in the reduced product. In hydrocyanation of 1, cyano group occupied both the equatorial and the axial positions depending on the experimental conditions employed. Consideration of bent conformations of the reduced or addition products explains these results.
在一种新的酶结合的5-脱
氟黄素模型(1)中,氢的引入仅发生在还原产物中C(5)的伪赤道位置。在1的
氰化过程中,
氰基根据所采用的实验条件占据了赤道和轴向的位置。考虑到还原或加成产物的弯曲构象可以解释这些结果。