US4130568A
Expired / Lapsed
US
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8-Methoxypsoralen derivatives
Assignee: Hoffmann La Roche Inc
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Filing: 1977-08-10
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Granted: 1978-12-19
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Expires: 1997-08-10
Abstract
Abstract The invention relates to synthetic processes to produce the known pharmacologically active 8-methoxypsoralen and derivatives thereof. Also disclosed are various novel intermediates utilized in these processes.
Inventors
- 👤 Pasquale N. Confalone
- 👤 Elizabeth D. Lollar
- 👤 Giacomo Pizzolato
- 👤 Milan R. Uskokovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/04; C07D311/00; C07D311/02; C07D311/04; C07D311/06; C07D311/08; C07D311/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
45 words
A compound of the formula ##STR7## wherein R 2 is selected from the group consisting of hydrogen, lower alkyl or a substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, halo, nitro or alkyl substituted benzyl.
Claim 2
Dependent Claim
45 words
A compound of the formula ##STR7## wherein R 2 is selected from the group consisting of hydrogen, lower alkyl or a substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, halo, nitro or alkyl substituted benzyl.
Claim 3
Dependent Claim
82 words
A compound of the formula ##STR8## wherein R 2 is selected from the group consisting of hydrogen, lower alkyl or a substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, halo, nitro or alkyl substituted benzyl and R is selected from the group consisting of lower alkyl or a substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, halo, nitro or alkyl substituted benzyl.
Claim 4
Dependent Claim
82 words
A compound of the formula ##STR8## wherein R 2 is selected from the group consisting of hydrogen, lower alkyl or a substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, halo, nitro or alkyl substituted benzyl and R is selected from the group consisting of lower alkyl or a substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, halo, nitro or alkyl substituted benzyl.
Claim 5
Dependent Claim
44 words
A compound of the formula ##STR9## wherein R 2 is selected from the group consisting of hydrogen, lower alkyl and substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, nitro, halo or alkyl substituted benzyl.
Claim 6
Dependent Claim
44 words
A compound of the formula ##STR9## wherein R 2 is selected from the group consisting of hydrogen, lower alkyl and substituent selected from the group consisting of phenyl, pyridyl, furyl, halo-substituted phenyl, lower alkyl-substituted phenyl, benzyl and alkoxy, nitro, halo or alkyl substituted benzyl.
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) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |