US3856829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
16{62 -hydrocarbon substituted estrane compounds
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1973-03-05
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Granted: 1974-12-24
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Expires: 1993-03-05
Abstract
Abstract Novel 16 Beta -hydrocarbon substituted estrane compounds are provided represented by the formula: WHEREIN A is hydrogen or an acyl radical and R is a hydrocarbon radical having at least 2 carbon atoms. These novel compounds are characterized by a highly effective anti-androgenic activity.
Inventors
- 👤 G Goto
- 👤 R Nakayama
- 👤 K Hiraga
- 👤 K Yoshioka
- 👤 M Masuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:52
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/565; C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
11 words
A compound as claimed in claim 1, wherein A is hydrogen.
Claim 4
Dependent Claim
14 words
A compound as claimed in claim 2, which is 16 Beta -ethyl-17 Beta -hydroxyestra-4-en-3-one.
Claim 5
Dependent Claim
13 words
A compound as claimed in claim 2, which is, 16 Beta -n-propyl-17 -hydroxyestra-4-en-3-one.
Claim 6
Dependent Claim
14 words
A compound as claimed in claim 2, which is, 16 Beta -isopropyl-17 Beta -hydroxyestra-4-en-3-one.
Claim 7
Dependent Claim
14 words
A compound as claimed in claim 4, which is, 16 Beta -allyl-17 Beta -hydroxyestra-4-en-3-one.
Claim 8
Dependent Claim
14 words
A compound as claimed in claim 2, which is, 16 Beta -cyclohexyl-17 Beta -hydroxyestra-4-en-3-one.
Claim 9
Dependent Claim
14 words
A compound as claimed in claim 2, which is, 16 Beta -phenyl-17 Beta -hydroxyestra-4-en-3-one.
Claim 10
Dependent Claim
20 words
A compound as claimed in claim 1, wherein A is an organic carboxylic radical having up to 10 carbon atoms.
Claim 11
Dependent Claim
14 words
A compound as claimed in claim 1, which is, 17 Beta -acetyloxy-16 Beta -ethylestra-4-en-3-one.
Claim 12
Dependent Claim
14 words
A compound as claimed in claim 1, which is, 17 Beta -caproyloxy-16 Beta -ethylestra-4-en-3-one.
Claim 13
Dependent Claim
14 words
A compound as claimed in claim 1, which is, 17 Beta -propionoyloxy-16 Beta -ethylestra-4-en-3-one.
Claim 14
Dependent Claim
14 words
A compound as claimed in claim 1, which is, 17 Beta -phenoxyacetyloxy-16 Beta -ethylestra-4-en-3-one.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |