Patent US4101545A successfully refreshed from Google Patents.
US4101545A
Expired / Lapsed
US
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Diamino-androstanes and a process for the preparation of the said compounds
Assignee: Richter Gedeon Vegyeszeti Gyar Nyrt
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Filing: 1976-07-28
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Granted: 1978-07-18
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Expires: 1996-07-28
Abstract
Abstract Curare-type salts of the formula <IMAGE> (1a) or <IMAGE> (1b) WHEREIN Ac is an alkyl carbonyl group containing 1 to 4 carbon atoms in the alkyl moiety and one of R1 and R2, is a methylene group and the other is a group of the formula >N-R2 wherein R2 is an alkyl group containing 1 to 3 carbon atoms, A is halogen and R3 is an alkyl group containing 1 to 4 carbon atoms, or an alkyl group; and A PROCESS FOR THE PREPARATION THEREOF ARE DISCLOSED.
Inventors
- 👤 Zoltan Tuba
- 👤 Maria Marsai
- 👤 Katalin Biro
- 👤 Laszlo Szporny
- 👤 Egon Karpati
- 👤 Szaboles Szeberenyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:30
CPC Classifications
C; C07; C07J; C07J41/00; C07J41/0005; A; A61; A61P; A61P21/00; A61P21/02; C07J13/00; C07J13/005; C07J43/00; C07J43/003; C07J71/00; C07J71/0005; C07J71/001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
A compound of the formulae ##STR11## wherein Ac is an alkyl carbonyl group containing 1 to 4 carbon atoms in the alkyl moiety and one of R 1 and R 1 ' is a methylene group and the other is a group of the formula >N-R 2 wherein R 2 is an alkyl group containing 1 to 3 carbon atoms, A is halogen and R 3 is an alkyl group containing 1 to 4 carbon atoms, or an allyl group
Claim 2
Dependent Claim
80 words
A compound of the formulae ##STR11## wherein Ac is an alkyl carbonyl group containing 1 to 4 carbon atoms in the alkyl moiety and one of R 1 and R 1 ' is a methylene group and the other is a group of the formula >N-R 2 wherein R 2 is an alkyl group containing 1 to 3 carbon atoms, A is halogen and R 3 is an alkyl group containing 1 to 4 carbon atoms, or an allyl group
Claim 3
Dependent Claim
9 words
The compound defined in claim 1 which is 2β-N-methyl-piperadino-16β-(4-dimethyl-piperazine)-3α,17.beta.-diacetoxy-5α-androstane-dibromide.
Claim 4
Dependent Claim
9 words
The compound defined in claim 1 which is 2β-(4-dimethyl-piperazino)-16βN-methyl-piperidino-3α,17.beta.-diacetoxy-5α-androstane-dibromide.
Claim 5
Dependent Claim
9 words
The compound defined in claim 1 which is 2β-(4-dimethyl-piperazino)-16β-piperidino-3α-17β-diacetoxy-5α-androstane-bromide.
References Cited (Backward Citations)
US3553212A
Cited
GB1398050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |