Find generic entry opportunities
Deep knowledge on
small-molecule drugs and
the 110,000 global patents
Anticipate generic drug launch
Manage your formulary budget
Drug patents …
… from Kazakhstan to Kalamazoo
Proactively manage your pharmacy inventory
|Title:||Novel 11,11-alkylidene steroids|
|Abstract:||The invention relates to novel 11,11-alkylidene steroids of the estrane and (19-nor-)pregnane series having a double bond starting from carbon atom 5, the alkylidene group in 11-position having the formula ##EQU1## wherein R.sub.1 and R.sub.2 are hydrogen or an alkyl group having 1-2 C-atoms, and to processes for their preparation. The novel compounds have very interesting biological activities, such as anabolic, androgenic, estrogenic, progestative, anti-androgenic, anti-oestrogenic, ovulation-inhibiting and gonad-inhibiting activities.|
|Inventor(s):||van den Broek; Albertus Joannes (Oss, NL)|
|Assignee:||Akzona Incorporated (Asheville, NC)|
Patent Claim Types:|
see list of patent claims
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
| This preview shows a limited data set|
Subscribe for full access, or try a Trial
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.
Export unavailable in trial.
Subscribe for complete access.