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Last Updated: January 26, 2023

Details for Patent: 5,856,346

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Summary for Patent: 5,856,346
Title: Short-acting dihydropyridines
Abstract:Compounds of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, chloro, bromo, nitro, cyano, trifluoromethyl, and R.sub.3 and R.sub.4 are independently selected from straight or branched lower (1-5 carbon atoms) alkyl groups, and including all optical isomers, provided that when R.sub.3 is methyl and R.sub.4 is tert.-butyl, then R.sub.1 /R.sub.2 are not hydrogen/hydrogen, hydrogen/2'-trifluormethyl, 2'-chloro/3'-chloro, and when R.sub.3 is methyl and R.sub.1 /R.sub.2 is hydrogen/3'-nitro, then R.sub.4 are not methyl, ethyl, propyl, iso-propyl, tert.-butyl, processes for their preparation, pharmaceutical preparations containing them and the use of the compounds in lowering the blood pressure.
Inventor(s): Andersson; Kjell Hjalmar (Fjar.ang.s, SE), Nordlander; Margareta (Askim, SE), Westerlund; Rolf Christer (Molndal, SE)
Assignee: Astra Aktiebolag (Sodertalje, SE)
Application Number:08/356,224
Patent Claim Types:
see list of patent claims
Compound; Process; Composition; Use;

Drugs Protected by US Patent 5,856,346

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

Foreign Priority and PCT Information for Patent: 5,856,346

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Sweden9303657Nov 05, 1993
PCT Information
PCT FiledNovember 03, 1994PCT Application Number:PCT/SE94/01031
PCT Publication Date:May 11, 1995PCT Publication Number: WO95/12578

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