Syntheses of (<i>R</i>)- and (<i>S</i>)-2- and 6-Fluoronorepinephrine and (<i>R</i>)- and (<i>S</i>)-2- and 6-Fluoroepinephrine: Effect of Stereochemistry on Fluorine-Induced Adrenergic Selectivities
作者:Shou-fu Lu、B. Herbert、Günter Haufe、Klaus Wilhelm Laue、William L. Padgett、O. Oshunleti、John W. Daly、Kenneth L. Kirk
DOI:10.1021/jm990599h
日期:2000.4.1
Several routes to the enantiomers of fluoronorepinephrines (1) and fluoroepinephrines (2) were explored. A catalytic enantioselective oxazaborolidine reduction and a chiral (salen)Ti(IV) catalyzed asymmetric synthesis of silyl cyanohydrins proved efficacious in the key stereo-defining steps of two respective routes. Binding studies of the catecholamines with alpha(1)-, alpha(2)-, beta(1)-, and beta(2)-adrenergic