Patent US1579979A successfully refreshed from Google Patents.
Patent US3984476A successfully refreshed from Google Patents.
US3984476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
D-homo-19-norsteroids
Assignee: Individual
•
Filing: 1975-10-14
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Granted: 1976-10-05
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Expires: 1995-10-14
Abstract
Abstract D-Homosteroids of the formula ##SPC1## Wherein R 3 α is hydrogen, R 3 β is hydrogen, lower alkanoyloxy or aroyloxy and R 3 α and R 3 β taken together are oxo; R 13 is lower alkyl; R 17a β is hydrogen, lower alkanoyl, aroyl or lower alkyl; R 17a α is hydrogen, lower alkyl, ethynyl, 1-propynyl, vinyl, chloroethynyl, butadiynyl or propadienyl and the dotted line in the A-ring denotes an additional carbon bond in either the 4,5- or 5(10)-position and processes for the preparation thereof are disclosed. The D-homosteroids of the present invention are useful as contraceptives and regulators of the female menstrual cycle.
Inventors
- 👤 Andor Furst
- 👤 Marcel Muller
- 👤 Jurg Albert Walter Gutzwiller
- 👤 Ulrich Kerb
- 👤 Rudolf Wiechert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:13
CPC Classifications
C; C07; C07J; C07J63/00; C07J63/008
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
A compound of the formula ##SPC5## wherein R 3 .sup.α is hydrogen, R 3 .sup.β is hydrogen, lower alkanoyloxy or conventional steroid aroyloxy and R 3 .sup.α and R 3 .sup.β taken together are oxo; R 13 is lower alkyl; R 17a .sup.β is hydrogen, lower alkanoyl, conventional steroid aroyl or lower alkyl; R 17a .sup.α is hydrogen, lower alkyl, ethynyl, 1-propynyl, vinyl, chloroethynyl, butadiynyl or propadienyl and the dotted line in the A-ring denotes an additional carbon to carbon bond in either the 4,5- or 5(10)-position.
Claim 2
Dependent Claim
87 words
A compound of the formula ##SPC5## wherein R 3 .sup.α is hydrogen, R 3 .sup.β is hydrogen, lower alkanoyloxy or conventional steroid aroyloxy and R 3 .sup.α and R 3 .sup.β taken together are oxo; R 13 is lower alkyl; R 17a .sup.β is hydrogen, lower alkanoyl, conventional steroid aroyl or lower alkyl; R 17a .sup.α is hydrogen, lower alkyl, ethynyl, 1-propynyl, vinyl, chloroethynyl, butadiynyl or propadienyl and the dotted line in the A-ring denotes an additional carbon to carbon bond in either the 4,5- or 5(10)-position.
Claim 3
Dependent Claim
34 words
A compound of claim 1 wherein R 3 .sup.α and R 3 .sup.β taken together are oxo; R 13 is methyl or ethyl; and the double bond in the A-ring is in the 4,5-position.
Claim 4
Dependent Claim
21 words
A compound of claim 2 wherein R 17a .sup.α is hydrogen, ethynyl, chloroethynyl or butadiynyl and R 17a .sup.β is hydrogen.
Claim 5
Dependent Claim
8 words
The compound of claim 3 which is 17a-hydroxy-D-homo-19-nor-17aα-pregna-4,16dien-20-yn-3-one.
Claim 6
Dependent Claim
8 words
The compound of claim 3 which is 13-ethyl-17a-hydroxy-D-homo-18,19-dinor-17aα-pregna-4,16dien-20-yn-3-one.
Claim 7
Dependent Claim
8 words
The compound of claim 3 which is 13-ethyl-21-chloro-17a-hydroxy-D-homo-18,19-dinor-17aα-pregna-4,16-dien-20-yn-3-one.
Claim 8
Dependent Claim
8 words
The compound of claim 3 which is 17aβ-hydroxy-D-homoestra-4,16-dien-3-one.
Claim 9
Dependent Claim
8 words
The compound of claim 3 which is 13-ethyl-17aβ-hydroxy-D-homogona-4,16-dien-3-one.
Claim 10
Dependent Claim
8 words
The compound of claim 1 which is 17a-hydroxy-D-homo-19-nor-17aα-pregna-5(10),16-dien-20-yn-3-one.
Claim 11
Dependent Claim
8 words
The compound of claim 1 which is 13-ethyl-17aβ-hydroxy-17a-methyl-D-homogona-4,16-dien-3-one.
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US2784234A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |