Structure-function relationship of Yuehchukene II. The effect of C-6 indole rotation on anti-implantation activity
摘要:
In a first attempts to define the structural requirements for the expression of anti-implantation activity in Yuehchukene (YCK), it was found that the relative position or planarity of the aromatic centres may be crucial. New synthetic routes leading to analogues with modification of C-7 substituents were established. Results indicated that a bulky group at C-7 that served to restrict the rotation of the C-6 indole was indispensable. Further steric hindrance by 2'-methyl would increase potency in all weak analogues. It was concluded that YCK required an optimal conformation that was defined by a narrowly-fixed angle between the, planes of the C-6 indole and the tetracyclic unit.
Structure-function relationship of Yuehchukene II. The effect of C-6 indole rotation on anti-implantation activity
作者:KF Cheng、TT Wong、KP Chan、YC Kong
DOI:10.1016/0223-5234(92)90100-f
日期:1992.3
In a first attempts to define the structural requirements for the expression of anti-implantation activity in Yuehchukene (YCK), it was found that the relative position or planarity of the aromatic centres may be crucial. New synthetic routes leading to analogues with modification of C-7 substituents were established. Results indicated that a bulky group at C-7 that served to restrict the rotation of the C-6 indole was indispensable. Further steric hindrance by 2'-methyl would increase potency in all weak analogues. It was concluded that YCK required an optimal conformation that was defined by a narrowly-fixed angle between the, planes of the C-6 indole and the tetracyclic unit.