US4125544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
20/22/23/24-Oxa-7-oxocholesterols and esters thereof
Assignee: GD Searle LLC
•
Filing: 1977-06-09
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Granted: 1978-11-14
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Expires: 1997-06-09
Abstract
Abstract Preparation and the antimicrobial and antihypercholesterolemic utility of 20/22/23/24-oxa-7-oxocholesterols and esters thereof are disclosed.
Inventors
- 👤 John H. Dygos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:58
CPC Classifications
C; C07; C07J; C07J7/00; C07J7/0005; C07J7/0065; C07J7/007; C07J1/00; C07J1/0003; C07J1/0018; C07J1/0022; C07J1/0029; C07J17/00; C07J31/00; C07J31/006; C07J51/00; C07J9/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
A compound of the formula wherein R represents hydrogen or methyl; R' represents hydrogen or 1-oxoalkyl of fewer than 9 carbons; x represents 0 or 1; y represents 0, 1, or 2; z represents 0, 1, 2, or 3; the sum of the integers represented by x, y, and z is 3; and x represents 0 only when y represents 0.
Claim 2
Dependent Claim
61 words
A compound of the formula wherein R represents hydrogen or methyl; R' represents hydrogen or 1-oxoalkyl of fewer than 9 carbons; x represents 0 or 1; y represents 0, 1, or 2; z represents 0, 1, 2, or 3; the sum of the integers represented by x, y, and z is 3; and x represents 0 only when y represents 0.
Claim 3
Dependent Claim
16 words
A compound according to claim 1 having the formula ##STR23## wherein R represents hydrogen or methyl.
Claim 4
Dependent Claim
9 words
A compound according to claim 1 which is 3β-hydroxy-17β-[(4-methylpentyl)oxy]androst-5-en-7-one.
Claim 5
Dependent Claim
16 words
A compound according to claim 1 having the formula ##STR24## wherein R represents hydrogen or methyl.
Claim 6
Dependent Claim
9 words
A compound according to claim 1 which is 20S-(3-methylbutoxy)-3β-hydroxypregn-5-en-7-one.
Claim 7
Dependent Claim
16 words
A compound according to claim 1 having the formula ##STR25## wherein R represents hydrogen or methyl.
Claim 8
Dependent Claim
9 words
A compound according to claim 1 which is 3β-hydroxy-20S-methyl-22-(2-methylpropoxy)pregn-5-en-7-one.
Claim 9
Dependent Claim
9 words
A compound according to claim 1 which is 22-(2,2-dimethylpropoxy)-3β-hydroxy-20S-methoxypregn-5-en-7-one.
Claim 10
Dependent Claim
15 words
A compound according to claim 1 which is ##STR26## wherein R represents hydrogen or methyl.
Claim 11
Dependent Claim
9 words
A compound according to claim 1 which is 3β-hydroxy-23-(1-methylethoxy)-24-norchol-5-en-7-one.
References Cited (Backward Citations)
US3326758A
Cited
US4006172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |