Stereoisomers of allenic amines as inactivators of monoamine oxidase type B. Stereochemical probes of the active site
作者:Roger A. Smith、Robert L. White、Allen Krantz
DOI:10.1021/jm00403a012
日期:1988.8
The kinetics of inactivation of mitochondrial monoamine oxidase type B (MAO-B) by a series of 18 stereoisomers of tertiary alpha-allenic amines have been investigated in detail. The chirality of the allene group in N-methyl-N-aralkylpenta-2,3-dienamines was found to have a profound effect on the inactivation rate, with the (R)-allenes being up to 200-fold more potent than their (S)-allenic counterparts
已详细研究了一系列18种叔α-烯丙胺立体异构体对线粒体单胺氧化酶B型(MAO-B)的灭活动力学。发现N-甲基-N-芳烷基戊2,3-二烯胺中丙二烯基的手性对失活速率有深远影响,(R)-丙二烯的效价比其( S)-allenic同行。N-苯乙基或N-α-取代的芳烷基取代基的存在严重损害了(S)-烯烯使MAO失活的能力。(R,R)-和(S,S)-N-甲基-N-(1,2,3,4-四氢-1-萘基)-penta-2的烯丙基和芳烷基中的相反手性, 3-二烯胺+ ++导致灭活速率的差异超过3个数量级。用一系列可逆的芳烷基胺抑制剂进一步检查了MAO-B的立体选择性。因此,确定(R)-1,2,3,4-四氢-1-萘胺的效价是其对映体的150倍。