ES375237A1 - Orally active sulfur-containing cephalosporin antibiotics - Google Patents
Orally active sulfur-containing cephalosporin antibioticsInfo
- Publication number
- ES375237A1 ES375237A1 ES375237A ES375237A ES375237A1 ES 375237 A1 ES375237 A1 ES 375237A1 ES 375237 A ES375237 A ES 375237A ES 375237 A ES375237 A ES 375237A ES 375237 A1 ES375237 A1 ES 375237A1
- Authority
- ES
- Spain
- Prior art keywords
- acid
- ester
- methylthiomethyl
- group
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D501/00—Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
- C07D501/14—Compounds having a nitrogen atom directly attached in position 7
- C07D501/16—Compounds having a nitrogen atom directly attached in position 7 with a double bond between positions 2 and 3
- C07D501/20—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids
- C07D501/24—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids with hydrocarbon radicals, substituted by hetero atoms or hetero rings, attached in position 3
- C07D501/36—Methylene radicals, substituted by sulfur atoms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Abstract
Novel cephalosporanic acids of Formula I wherein R is phenyl, thienyl or phenyl substituted with OH, Cl, Br, NO 2 , CN, or C 1 -C 6 alkyl or alkoxy are prepared by acylating 3- methylthiomethyl-7-aminocephalosporanic acid or an ester thereof with N-protected phenylglycine, thienylglycine or appropriately substituted phenylglycine or an acid halide or anhydride thereof, and removing the N-protecting group, and the ester group if present. The 3-methylthiomethyl - 7 - aminocephalosporanic acid may be prepared by treating either (a) 7- aminocephalosporanic acid or (b) the corresponding 7-phenylacetamido or 7-phenoxyacetamido acid with methyl mercaptan, and in the case of (b), protecting the carboxyl group by ester formation and then splitting off the phenylacetyl or phenoxyacetyl group by treatment with PCl 5 in the presence of a tertiary amine followed by treatment with a lower alkanol and then with water or aqueous acid. Alternatively a #3-desacetoxycephalosporanic acid ester prepared by heating a penicillin sulphoxide ester under acid conditions, is isomerized to the corresponding #2 compound, converted to the 3-bromomethyl derivative with N-bromosuccinimide, and treated with methyl mercaptan to give the 3-methylthiomethyl derivative which is converted to the corresponding #3 isomer by treatment with a base. The 7-acylating group is then removed as described above to give the required 7-amino-3-methylthiomethyl starting material.. Pharmaceutical compositions having antibacterial activity comprise a cephalosporanic acid of Formula I together with a pharmaceutically acceptable carrier.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80264369A | 1969-02-26 | 1969-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES375237A1 true ES375237A1 (en) | 1972-03-16 |
Family
ID=25184304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES375237A Expired ES375237A1 (en) | 1969-02-26 | 1970-01-07 | Orally active sulfur-containing cephalosporin antibiotics |
Country Status (17)
Country | Link |
---|---|
AT (1) | AT296501B (en) |
BE (1) | BE743754A (en) |
BR (1) | BR6915176D0 (en) |
CH (1) | CH536321A (en) |
DE (1) | DE2000111A1 (en) |
DO (1) | DOP1970001696A (en) |
ES (1) | ES375237A1 (en) |
FR (1) | FR2032408B1 (en) |
GB (1) | GB1261780A (en) |
GT (1) | GT196915584A (en) |
IL (1) | IL33522A0 (en) |
LU (1) | LU60150A1 (en) |
NL (1) | NL6919698A (en) |
PL (1) | PL80818B1 (en) |
RO (1) | RO56960A (en) |
SU (1) | SU383302A3 (en) |
ZA (1) | ZA698494B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7112483A (en) * | 1970-09-14 | 1972-03-16 | ||
GB1385895A (en) * | 1971-03-01 | 1975-03-05 | Glaxo Lab Ltd | Antibiotics |
CA1076560A (en) * | 1972-06-14 | 1980-04-29 | Smith Kline And French Canada Ltd. | 3-heterocyclic thiomethylcephalosporins |
US4409215A (en) * | 1979-11-19 | 1983-10-11 | Fujisawa Pharmaceutical Co., Ltd. | 7-Acylamino-3-substituted cephalosporanic acid derivatives and processes for the preparation thereof |
-
1969
- 1969-12-05 ZA ZA698494A patent/ZA698494B/en unknown
- 1969-12-11 IL IL33522A patent/IL33522A0/en unknown
- 1969-12-15 BR BR215176/69A patent/BR6915176D0/en unknown
- 1969-12-24 BE BE743754D patent/BE743754A/xx unknown
- 1969-12-24 SU SU1389812A patent/SU383302A3/ru active
- 1969-12-26 FR FR6945111A patent/FR2032408B1/fr not_active Expired
- 1969-12-26 GT GT196915584A patent/GT196915584A/en unknown
- 1969-12-31 GB GB63526/69A patent/GB1261780A/en not_active Expired
- 1969-12-31 NL NL6919698A patent/NL6919698A/xx unknown
-
1970
- 1970-01-02 DE DE19702000111 patent/DE2000111A1/en active Pending
- 1970-01-02 PL PL1970137933A patent/PL80818B1/pl unknown
- 1970-01-06 RO RO62053A patent/RO56960A/ro unknown
- 1970-01-07 DO DO1970001696A patent/DOP1970001696A/en unknown
- 1970-01-07 CH CH10970A patent/CH536321A/en not_active IP Right Cessation
- 1970-01-07 AT AT11670A patent/AT296501B/en not_active IP Right Cessation
- 1970-01-07 ES ES375237A patent/ES375237A1/en not_active Expired
- 1970-01-07 LU LU60150D patent/LU60150A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH536321A (en) | 1973-04-30 |
ZA698494B (en) | 1971-07-28 |
SU383302A3 (en) | 1973-05-25 |
FR2032408A1 (en) | 1970-11-27 |
LU60150A1 (en) | 1970-07-09 |
NL6919698A (en) | 1970-08-28 |
FR2032408B1 (en) | 1974-02-01 |
IL33522A0 (en) | 1970-02-19 |
BR6915176D0 (en) | 1973-02-13 |
GT196915584A (en) | 1971-06-19 |
AT296501B (en) | 1972-02-25 |
BE743754A (en) | 1970-06-24 |
DE2000111A1 (en) | 1970-09-10 |
GB1261780A (en) | 1972-01-26 |
DOP1970001696A (en) | 1974-12-09 |
RO56960A (en) | 1974-11-11 |
PL80818B1 (en) | 1975-08-30 |
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