GB1290787A - - Google Patents
Info
- Publication number
- GB1290787A GB1290787A GB1199570A GB1290787DA GB1290787A GB 1290787 A GB1290787 A GB 1290787A GB 1199570 A GB1199570 A GB 1199570A GB 1290787D A GB1290787D A GB 1290787DA GB 1290787 A GB1290787 A GB 1290787A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formula
- compound
- tert
- penicillin
- acid
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
1290787 Penicillin esters; amino acid derivatives LOVENS KEMISCKE FABRIK PRODUKTIONS AS 19 April 1971 [12 March 1970 26 Aug 1970] 11995/70 and 41167/70 Headings C2A and C2C Novel penicillin esters of the general Formula I wherein the asterisk indicates the possibility of an asymmetric carbon atom, n is an integer from 0 to 5, R 1 -CO-NH represents the 6- acylamino group of a known penicillin, R 2 is hydrogen or an aliphatic, aromatic or heterocyclic radical which radical may be substituted; R 3 , R 4 and R 5 each are hydrogen or a C 1 to C 6 aliphatic radical or R 2 and R 5 together with the common carbon atom may form a 5-, 6- or 7- membered carbocyclic ring, or R 3 and R 4 together with the N atom may form a heterocycle or R 4 and R 5 together with the N atom and the adjacent C atom may form a heterocycle, and salts of such esters, are prepared by either (a) reacting a penicillin salt of Formula II with a compound of formula Y-CH 2 -Cl, where R 1 is as defined above, X is a cation and Y is a bromine or iodine atom or an alkylsulphonyloxy or arylsulphonyloxy radical, to give a compound of Formula IV and then reacting this compound with a salt of a compound of Formula V wherein R 2 , R 5 and n are as defined above and Z is a substituted or unsubstituted amino group, a protected amino group or a group, e.g. NO 2 , Cl or azide) which can easily be converted to an amino group, to give a compound of Formula VI or (b) reacting a penicillin salt of Formula II above with a compound of Formula VII wherein Z, n, R 2 and R 5 are as above, to give a compound of Formula VI; and when Z is a protected amino group or a group which can be converted to an amino group, subjecting the compound (VI) to hydrolysis, hydrogenation or amination to convert Z to a substituted or unsubstituted amino group. Alternatively the compounds of Formula I may be prepared by acylating a corresponding ester of 6-aminopenicillanic acid or a salt thereof with an acid of formula R 1 COOH or an acylating derivative thereof. The compounds of Formula IV above are novel intermediates. N-protected amino acid chloromethyl esters of Formula VII above are prepared by treating the following N-protected amino acids with chloroiodomethane: N-tritylglycine, N-tert.- butoxycarbonylglycine; N - carbobenzoxyglycine; N - tert. - butoxycarbonylphenylalanine; N - tert. - butoxycarbonylproline; and N - tert.- butoxycarbonyltryptophan. The N-tritylglycinechloromethyl ester is treated with ptoluenesulphonic acid to give glycine chloromethyl ester p-toluenesulphonate. N-tert.butoxycarbonylphenylalanine chloromethyl ester is reacted with HBr/Acetic acid to give phenyl alanine chloromethyl ester hydrobromide. Potassium salts of N-[1-methyl-2-carbomethoxyvinyl]amino acids of Formula V above are prepared by the procedure described in Example I of Specification 986,904; the amino acid moieties are: L-, D- and D,L-valine; L- leucine; L-isoleucine; D,L-tert-leucine; L- aspartic acid α- and #-methyl esters; glycine; D-α-phenylglycine and L-methionine. Pharmaceutical compositions having antibiotic activity comprise a penicillin ester of Formula I or a non-toxic salt thereof together with a pharmaceutically acceptable carrier.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1199570 | 1970-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1290787A true GB1290787A (en) | 1972-09-27 |
Family
ID=9996505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1199570A Expired GB1290787A (en) | 1970-03-12 | 1970-03-12 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1290787A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5481011A (en) * | 1994-12-13 | 1996-01-02 | Bristol-Myers Squibb Company | Process for preparing N-protected amino acid α-halomethyl ketones and alcohols from N-protected amino acid esters |
-
1970
- 1970-03-12 GB GB1199570A patent/GB1290787A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5481011A (en) * | 1994-12-13 | 1996-01-02 | Bristol-Myers Squibb Company | Process for preparing N-protected amino acid α-halomethyl ketones and alcohols from N-protected amino acid esters |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |