.beta.-Adrenergic blocking agents with acute antihypertensive activity
作者:J. J. Baldwin、E. L. Engelhardt、R. Hirschmann、G. F. Lundell、G. S. Ponticello、C. T. Ludden、C. S. Sweet、A. Scriabine、N. N. Share、R. Hall
DOI:10.1021/jm00192a015
日期:1979.6
vasodilating/beta-adrenergic blockingagent 2-[4-[3-(tert-butylamino)-2-hydroxypropoxy]phenyl]-4-(trifluoromethyl)imidazole (1) has been investigated. Introduction of selected substitutents onto the imidazole ring, in place of the trifluoromethyl group, has yielded highly cardioselective beta-adrenergic blockingagents such as 7, 17, and 18. The placement of alkyl or chloro groups onto the aryl ring of 1, as illustrated
Oculoselective beta-blockers for treatment of elevated intraocular
申请人:Merck & Co., Inc.
公开号:US04665094A1
公开(公告)日:1987-05-12
Hydroxyalkyl-phenoxy-propan-2-olamines and novel esters thereof are oculoselective .beta.-blockers useful in the treatment of elevated intraocular pressure with little or no effect on the pulmonary or cardiovascular system.
Leclerc; Amlaiky; Rouot, European Journal of Medicinal Chemistry, 1982, vol. 17, # 1, p. 69 - 74
作者:Leclerc、Amlaiky、Rouot
DOI:——
日期:——
Use of (S)-(trifloxymethyl)oxirane in the synthesis of a chiral .beta.-adrenoceptor antagonist, (R)- and (S)-9-[[3-(tert-butylamino)-2-hydroxypropyl]oximino]fluorene
作者:John J. Baldwin、David E. McClure、Dennis M. Gross、Michael Williams
DOI:10.1021/jm00350a009
日期:1982.8
Two synthetic approaches were used to prepare, in chirally pure form, the beta-adrenoceptor antagonist 9-[[3-(tert-butylamino)-2-hydroxypropyl]oximino]fluorene (1a). One of these employed the oxazolidine (S)-6 generated from D-mannitol, while the other utilized (S)-[[(trifluoromethanesulfonyl)oxy]methyl]oxirane (4) as the chiral three-carbon fragment. This latter synthesis was designed to incorporate the amino function in the last step. In vitro, a beta 2 selectivity of only 2.2 was observed for 1a. The example, (S)-9-[[3-(tert-amylamino)-2-hydroxypropyl]oximino]fluorene (1b), was also prepared and found to be selective for the beta 1 receptor by a factor of 2.5. In contrast to other beta-adrenoceptor antagonists, the enantiomers of 1a exhibited no chiral preference; i.e., (S)-1a and (R)-1a possessed a similar order of beta-adrenoceptor antagonistic activity.
Stereoselective synthesis of the (R)- and (S)-1-(2-amino-3-nitrophenoxy)-3-(tert-butylamino)-2-propanol from the enantiomeric glycidyl tosylates