[EN] NOVEL ENANTIOMERS OF TETRAHYDROISOQUINOLINE DERIVATIVES AND THEIR PHARMACEUTICALLY ACCEPTABLE SALTS, THEIR PREPARATIONS AND PHARMACEUTICAL COMPOSITIONS [FR] NOUVEAUX ENANTIOMERES DE DERIVES DE TETRAHYDROISOQUINOLINE ET LEURS SELS PHARMACEUTIQUEMENT ACCEPTABLES, PREPARATIONS ET COMPOSITIONS PHARMACEUTIQUES DE CES DERNIERS
Novel enantiomers of etrahydroisoquinoline derivatives and theirpharmaceutically acceptable salts, their preparations and pharmaceutical compositions
申请人:Yun-Choi Hye-Sook
公开号:US20060058346A1
公开(公告)日:2006-03-16
The disclosure concerns novel enantiomers of tetrahydroisoquinoline derivatives and their pharmaceutically acceptable salts, their preparations and pharmaceutical compositions. The enantiomers of tetrahydroisoquinoline derivatives are provided which are useful in stimulating heart rate and hypotensive activity, inhibitory activity against platelet aggregation, and suppressive against inducible NO synthase. The enantiomers of tetrahydroisoquinoline derivatives and their pharmaceutically acceptable salts are effective for treating congestive heart failure, hypertension, thrombosis, inflammation, septicemia, cardiac insufficiency, and disseminated intravascular coagulopathy.
Synthesis and evaluation of furoxan-based nitric oxide-releasing derivatives of tetrahydroisoquinoline as anticancer and multidrug resistance reversal agents
作者:Zhi-hong Zou、Xiao-bu Lan、Hai Qian、Wen-long Huang、Yun-man Li
DOI:10.1016/j.bmcl.2011.07.077
日期:2011.10
Multidrug resistance in tumor cells poses a major obstacle to efficient chemotherapy. Several types of agents have been recognized as multidrug resistance inhibitors, among which the tetrahydroisoquinolines is the most studied. In current study 16 furoxan-based nitric oxide-releasing derivatives of tetrahydroisoquinoline were synthesized. Their cytotoxic activities and effects in reversing multidrug resistance have been evaluated. The results revealed that these compounds had moderate cytotoxic effects. Compounds 7a-f, 7h, and 7l showed higher cytotoxicities than the rest, but lower than adriamycin on K562 cell line. Compounds 7d, 7f, and 7l exhibited potent MDR reversal activities on K562/A02 cell line. The accumulation assay indicated that compounds 7d, 7f, and 7l significantly increased the intracellular accumulation of rhodamine123 in K562/A02 cells. Furthermore, these three compounds produced high concentrations of NO in K562/A02 cells. Potentially, the high concentrations of NO produced by NO donor moieties will lead to an increased cytotoxicity to K562/A02 cells. Our results suggested that compounds 7d, 7f, and 7l had anticancer effects, as well as multidrug resistance reversal effects. (C) 2011 Elsevier Ltd. All rights reserved.
Enantioselective synthesis of (R)-(+)- and (S)-(−)-higenamine and their analogues with effects on platelet aggregation and experimental animal model of disseminated intravascular coagulation
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. (c) 2008 Published by Elsevier Ltd.
NOVEL ENANTIOMERS OF TETRAHYDROISOQUINOLINE DERIVATIVES AND THEIR PHARMACEUTICALLY ACCEPTABLE SALTS, THEIR PREPARATIONS AND PHARMACEUTICAL COMPOSITIONS