Guanine hydrolysis under basic conditions to substituted imidazoles
摘要:
First base induced opening of multicyclic guanines to isolable substituted imidazoles, and possible mechanism for this observation are described. (C) 2000 Elsevier Science Ltd. All rights reserved.
A novel synthesis of guanine PDE inhibitors via tricyclic imidazopyrimidines
摘要:
A new method for the preparation of developmental tetracyclic guanine PDE inhibitors via a common tricyclic pyrimidine intermediate is described. (C) 2003 Elsevier Science Ltd. All rights reserved.
The present invention is directed to arginase inhibitor compounds of formula IA or formula IB:
or a pharmaceutically acceptable salt thereof, compositions containing these compounds, and methods of their use for the treatment and diagnosis of conditions characterized by upregulation of arginase, abnormally high arginase activity, or by abnormally low nitric oxide synthase activity.
The present invention includes arginase enzyme inhibitors, compositions comprising these arginase inhibitors, and methods of treating or diagnosing conditions characterized either by abnormally high arginase activity or abnormally low nitric oxide levels in a mammal, comprising administering compositions of the invention to the mammal.
Use of PDE V inhibitors for improved fecundity in mammals
申请人:——
公开号:US20030018037A1
公开(公告)日:2003-01-23
The invention relates to the use of a cyclic guanosine 3′, 5′-monophosphate phosphodiesterase type five (cGMP PDE V) inhibitor for increasing fecundity in a mammal by one or more of (a) promoting the growth of an oocyte, zygote, blastocyst, embryo and/or foetus, (b) increasing the rate or probability of survival of an embryo and/or foetus and (c) increasing the birth weight of a progeny, or for increasing milk productivity.
A method of treating an individual is described. The method comprise delivering to the individual an agent that is capable of modulating an intermediate conductance calcium-activated potassium (IK
Ca
) channel in the sexual genitalia of the individual; wherein the modulation of the IK
Ca
channel by the agent is capable of mediating a relaxation of corpus cavernosal smooth muscle tone. The agent may be admixed with a pharmaceutically acceptable carrier, diluent or exicipient.
The present invention is directed to arginase inhibitor compounds of formula IA or formula IB:
or a pharmaceutically acceptable salt thereof, compositions containing these compounds, and methods of their use for the treatment and diagnosis of conditions characterized by upregulation of arginase, abnormally high arginase activity, or by abnormally low nitric oxide synthase activity.
本发明涉及式 IA 或式 IB 的精氨酸酶抑制剂化合物:
或其药学上可接受的盐、含有这些化合物的组合物,以及它们用于治疗和诊断以精氨酸酶上调、精氨酸酶活性异常高或一氧化氮合酶活性异常低为特征的疾病的方法。