Enantioselective synthesis of (R)-(+)- and (S)-(-)-higenamine and their analogues with effects on platelet aggregation and experimental animal model of disseminated intravascular coagulation.

Abstract:

:Optically active tetrahydroisoquinoline alkaloids, (R)-(+)-higenamine (1R) and (S)-(-)-higenamine (1 S), and their optically active 1-naphthylmethyl analogues (2 and 3), were synthesized by enantioselective hydrogenation of the corresponding dihydroisoquinoline intermediates 7 as a key step. The evaluation of the platelet anti-aggregation effect demonstrated clearly that the (S)-(-)-enantiomers, 1S, 2S, and 3S, had higher inhibitory potency than the corresponding (R)-(+)-antipodes, 1R, 2R, and 3R, respectively, to platelet aggregation induced by epinephrine. 1S enantiomer was superior to the corresponding 1R enantiomer in attenuating all of the disseminated intravascular coagulation (DIC) and multiple organ failure (MOF) parameters tested, while the S enantiomers 2S and 3S ameliorated some of the DIC and MOF parameters more effectively than the corresponding antipodes 2R and 3R.

journal_name

Bioorg Med Chem Lett

authors

Pyo MK,Lee DH,Kim DH,Lee JH,Moon JC,Chang KC,Yun-Choi HS

doi

10.1016/j.bmcl.2008.05.094

subject

Has Abstract

pub_date

2008-07-15 00:00:00

pages

4110-4

issue

14

eissn

0960-894X

issn

1464-3405

pii

S0960-894X(08)00602-1

journal_volume

18

pub_type

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