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Serving leading biopharmaceutical companies globally:

Queensland Health
US Department of Justice
Cantor Fitzgerald
Boehringer Ingelheim

Generated: November 23, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,659,516

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Summary for Patent: 4,659,516

Title: Steroid derivatives
Abstract:A steroid derivative of the formula: wherein ST is a 7.alpha.-linked steroid nucleus of the general formula: ##STR1## wherein the double bond(s) between carbon atoms 6 and 7 and/or carbon atoms 8 and 9 are optional; wherein the aromatic ring A may optionally bear one or two halogen or alkyl substituents; wherein R.sup.3 is hydrogen, alkyl, or acyl; wherein R.sup.16 is hydrogen, alkyl or hydroxy; wherein either R.sup.17 is hydroxy or acyloxy and R.sup.27 is hydrogen, alkyl, alkenyl or alkynyl, or R.sup.17 and R.sup.27 together form oxo (.dbd.O); wherein R.sup.18 is alkyl; wherein A is alkylene, alkenylene or alkynylene optionally fluorinated and optionally interrupted by --O--, --S--, --SO--, --SO.sub.2 --, --CO--, --NR--, --NRCO--, --CONR--, --COO--, --OCO-- or phenylene, wherein R is hydrogen or alkyl; wherein R.sup.1 is hydrogen, alkyl, alkenyl, cycloalkyl, halogenoalkyl, carboxyalkyl, alkoxycarbonylalkyl, aryl, arylalkyl, or dialkylaminoalkyl, or R.sup.1 is joined to R.sup.2 as defined below; and wherein X is --CONR.sup.2 --, --CSNR.sup.2 --, --NR.sup.12 CO--, --NR.sup.12 CS--, --NR.sup.12 CONR.sup.2 --, ##STR2## --SO.sub.2 NR.sup.2 -- or --CO--; or, when R.sup.1 is not hydrogen, is --O--, --NR.sup.2 --, --(NO)R.sup.2 --, --(PO)R.sup.2 --, --NR.sup.12 COO--; --NR.sup.12 SO.sub.2 --, --S--, --SO-- or --SO.sub.2 --; wherein R.sup.2 is hydrogen or alkyl or R.sup.1 and R.sup.2 together form alkylene or halogenoalkylene; wherein R.sup.12 is hydrogen or alkyl and wherein R.sup.22 is hydrogen, cyano or nitro; or a salt thereof when appropriate.
Inventor(s): Bowler; Jean (Sandbach, GB), Tait; Brian S. (Macclesfield, GB)
Assignee: Imperial Chemical Industries PLC (London, GB2)
Application Number:06/656,466
Patent Claim Types:
see list of patent claims
Compound; Process; Composition; Dosage form; Use;

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Foreign Priority and PCT Information for Patent: 4,659,516

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8327256Oct 12, 1983

International Patent Family for Patent: 4,659,516

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria35814► Subscribe
Germany122004000011► Subscribe
Germany3472792► Subscribe
European Patent Office0138504► SubscribeSPC/GB04/009United Kingdom► Subscribe
European Patent Office0138504► Subscribe91068Luxembourg► Subscribe
European Patent Office0138504► Subscribe300158Netherlands► Subscribe
European Patent Office0138504► Subscribe2004C/004Belgium► Subscribe
United Kingdom8327256► Subscribe
JapanH0216759► Subscribe
JapanS6097995► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Johnson and Johnson
Fish and Richardson
Queensland Health

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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