摘要:
The present invention is directed to a process of making spirocycles of general structural formula: ##STR1## where R.sub.1 is selected from the group consisting of CO--C.sub.1-3 alkyl, cyano, carboxy, carboxy C.sub.1-6 alkyl ester, carboxamide, C.sub.1-6 alkyl sulfinyl, C.sub.1-6 alkyl sulfonyl, C.sub.1-6 methanesulfonamide and halogen; R.sub.2 is selected from the group consisting of keto or alcohol, R.sub.3 is cyano, resulting in compounds which are Class III antiarrhythmic.
摘要翻译:本发明涉及制备通式结构式的螺环的方法:除了CO-C 1-3烷基,氰基,羧基,羧基C 1-6烷基酯,甲酰胺,C 1-6烷基亚磺酰基,C 1-6烷基磺酰基, C 1-6甲磺酰胺和卤素; R2选自酮或醇,R3为氰基,得到III类抗心律失常药物。
摘要:
The invention encompasses a novel process for making compounds of Formula I which are prodrugs of cyclooxygenase-2 selective inhibitors that convert in vivo to diaryl-2-(5H)-furanones and also liberate nitric oxide in vivo. As such, the compounds made by the present invention may be co-dosed with low-dose aspirin to treat chronic cyclooxygenase-2 mediated diseases or conditions, effectively reduce the risk of thrombotic cardiovascular events and potentially renal side effects and at the same time reduce the risk of GI ulceration or bleeding. The present invention describes an efficient and economical process for the preparation of 2,3-disubstituted (2Z)-4-acetoxybut-2-enoate derivatives that is useful for the production of kilogram quantities of material for preclinical and clinical use.
摘要:
The present invention is directed to an improved process for preparing the phenylacetic acid side chain of the compound of the formula ##STR1## This compound exhibits utility as a Class III antiarrhythmic agent.
摘要:
The invention encompasses a novel process for the formation of enantiomerically enriched mixtures of compounds of Formula I, which are useful precursors in the synthesis of phosphodiestersae IV inhibitors.
摘要:
The invention provides a process for regioselective substitution of trifluorobenzoate/trifluorobenzonitrile to afford the difluorobenzoate/difluorobenzonitrile in good yields. The resulting difluorobenzoate/difluorobenzonitrile can again be regioselectively substituted with a second nucleophile to give monofluorobenzoate/monofluorobenzonitrile also in good yields. This process is particularly useful for forming key intermediates in the synthesis of oxytocin antagonist compounds.
摘要:
The present invention is directed to the improved synthesis of compounds of formula I: which may be useful in the treatment of prostate cancer. Such compounds are synthesized in the presence of a carboxyl activating agent, an additive and a base for the preparation of a PSA conjugate which comprises an anthracycline antibiotic and an oligopeptide.
摘要:
The present invention is directed to the sodium salt of formula 5: which may be useful in the treatment of prostate cancer and benign prostatic hyperplasia. Also described are lyophilized formulations that comprise the sodium salt 5 or the corresponding free acid.