Patent US4393010A successfully refreshed from Google Patents.
US4393010A
Expired / Lapsed
US
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Nucleosidic phosphorylating agent and methods
Assignee: Genentech Inc
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Filing: 1981-08-20
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Granted: 1983-07-12
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Expires: 2001-08-20
Abstract
Abstract Compounds of the formula ##STR1## where R is a base labile substituted-phenyloxy protecting group, are useful as phosphorylating reagents in the synthesis of oligonucleotides by a phosphotriester method.
Inventors
- 👤 Roberto Crea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:55
CPC Classifications
C; C07; C07H; C07H21/00; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/14; C07F9/1406; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
14 words
A compound of structure ##STR8## where R is a base labile phenyloxy protecting group.
Claim 2
Dependent Claim
14 words
A compound of structure ##STR8## where R is a base labile phenyloxy protecting group.
Claim 3
Dependent Claim
22 words
A compound according to claim 1 wherein R is selected from the group consisting of p-chlorophenyloxy, o-chlorophenyloxy, 2,4-dichlorophenyloxy, p-nitrophenyloxy and p-methoxyphenyloxy groups.
Claim 4
Dependent Claim
5 words
The compound of structure ##STR9##
Claim 5
Dependent Claim
5 words
The compound of structure ##STR9##
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |