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 |
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>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 |
Sweden | 9303657 | Nov 05, 1993 |
PCT Information | |||
PCT Filed | November 03, 1994 | PCT Application Number: | PCT/SE94/01031 |
PCT Publication Date: | May 11, 1995 | PCT Publication Number: | WO95/12578 |
International Family Members for US Patent 5,856,346
Country | Patent Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
---|---|---|---|---|---|
Austria | 194330 | ⤷ Try a Trial | |||
Australia | 685532 | ⤷ Try a Trial | |||
Australia | 8119694 | ⤷ Try a Trial | |||
Brazil | 9407946 | ⤷ Try a Trial | |||
Canada | 2174969 | ⤷ Try a Trial | |||
>Country | >Patent Number | >Estimated Expiration | >Supplementary Protection Certificate | >SPC Country | >SPC Expiration |