greatly enhance potency of this class of inhibitors. Electronegative substitutions that favor a 90 degrees angle between the benzoyl ring and the amide bond yield the most potent compounds. There is a strong correlation between the potency of the compounds and the difference between the ab initio energy at 90 degrees and the global minima energy for given compounds. Combining the favored benzoyl substitutions
邻
溴苯甲酰基l-色
氨酸1抑制LFA-1与ICAM-1的缔合,其IC(50)为1.7microM。对苯甲酰基部分的结构-活性关系的评估表明,2,6-二取代极大地增强了这类
抑制剂的效力。有利于苯甲酰基环和酰胺键之间成90度角的电负性取代产生最有效的化合物。化合物的效力与90度从头算起的能量与给定化合物的整体最小能量之间的差异之间存在很强的相关性。将有利的苯甲酰基取代与
L-组氨酸和L-天冬酰胺结合使用,其效价比化合物1高15倍。