A chiral catalyst prepared from N,N′-dioxide and Co(BF4)2·6H2O was applied in the asymmetric hydride transfer initiated cyclization reaction, giving optically active tetrahydroquinolines in good yields with high enantioselectivities under mild reaction conditions. Meanwhile, in light of the absolute configuration of the product, a possible working model was proposed to explain the origin of the activation
Synthesis and biological properties of thiophene ring analogs of mianserin
作者:Jeffrey W. H. Watthey、Terrence Gavin、Mahesh Desai、Barbara M. Finn、Ronald K. Rodebaugh、Steven L. Patt
DOI:10.1021/jm00362a006
日期:1983.8
o-anisic acid (7) to give the N-phenylpiperazine 8. This substance was converted via ethylester 10 to 1-[2-(hydroxymethyl)phenyl]-4-methyl-2-(2-thienyl)piperazine (3), which was cyclized with polyphosphate ester to a 5:1 mixture of 2 and 12. The antidepressant potential of 2 maleate (CGS 11049A) and 12 fumarate (CGS 15413A) were compared with that of mianserin hydrochloride in a variety of biochemical and