US4416822A
Expired / Lapsed
US
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17β-Difluoromethyl steroids
Assignee: Pharmacia and Upjohn Co
•
Filing: 1982-07-09
•
Granted: 1983-11-22
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Expires: 2002-07-09
Abstract
Abstract 17β-Difluoromethyl steroids are disclosed which have progestational, antiprogestational activity and which are useful as and male and female contraceptive agents.
Inventors
- 👤 J. Allan Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:35
CPC Classifications
C; C07; C07J; C07J13/00; C07J13/007; C07J21/00; C07J21/005; C07J21/006; C07J3/00; C07J43/00; C07J43/003
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
66 words
A 17β-difluoromethyl steroid of the formula where R 6 is a hydrogen atom or methyl group with a proviso that R 6 is a hydrogen atom when R 7 is a methyl group; where R 7 is a hydrogen atom or methyl group with a proviso that R 7 is a hydrogen atom when R 6 is a methyl group; and R 10 is a hydrogen
Claim 2
Dependent Claim
66 words
A 17β-difluoromethyl steroid of the formula where R 6 is a hydrogen atom or methyl group with a proviso that R 6 is a hydrogen atom when R 7 is a methyl group; where R 7 is a hydrogen atom or methyl group with a proviso that R 7 is a hydrogen atom when R 6 is a methyl group; and R 10 is a hydrogen
Claim 3
Dependent Claim
11 words
A 17β-difluoromethyl steroid according to claim 1 where R 6 is
Claim 4
Dependent Claim
11 words
A 17β-difluoromethyl steroid according to claim 1 where R 7 is
Claim 5
Dependent Claim
9 words
A 17β-difluoromethyl steroid according to claim 1 which is
Claim 6
Dependent Claim
9 words
A 17β-difluoromethyl steroid according to claim 1 which is
Claim 7
Dependent Claim
9 words
A 17β-difluoromethyl steroid according to claim 1 which is
Claim 8
Dependent Claim
15 words
A 9-unsaturated steroid of the formula ##STR2## where R 7 is defined in claim 1.
Claim 9
Dependent Claim
10 words
A 9-unsaturated steroid according to claim 7 which is 17β-difluoromethylester-4,9-dien-3-one.
Claim 10
Dependent Claim
9 words
A Δ 9 (11) -steroid of the formula ##STR3##
Claim 11
Dependent Claim
9 words
A Δ 9 (11) -steroid of the formula ##STR3##
Claim 12
Dependent Claim
31 words
A 9,11-disubstituted steroid of the formula ##STR4## where R 9 is a hydrogen, fluorine, chlorine or bromine atom; and R 11 is an oxygen, fluorine or chlorine atom or hydroxyl group.
Claim 13
Dependent Claim
31 words
A 9,11-disubstituted steroid of the formula ##STR4## where R 9 is a hydrogen, fluorine, chlorine or bromine atom; and R 11 is an oxygen, fluorine or chlorine atom or hydroxyl group.
Claim 14
Dependent Claim
10 words
A 9,11-disubstituted steroid according to claim 10 which is 9α-chloro-11β-fluoro-17β-difluoromethylandrost-4-en-3-one.
Claim 15
Dependent Claim
10 words
A 9,11-disubstituted steroid according to claim 10 which is 9α-bromo-11β-fluoro-17β-difluoromethylandrost-4-en-3-one.
References Cited (Backward Citations)
US3211723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |