GB1464562A - Disubstituted xanthone carboxylic acid compounds - Google Patents
Disubstituted xanthone carboxylic acid compoundsInfo
- Publication number
- GB1464562A GB1464562A GB4009076A GB4009076A GB1464562A GB 1464562 A GB1464562 A GB 1464562A GB 4009076 A GB4009076 A GB 4009076A GB 4009076 A GB4009076 A GB 4009076A GB 1464562 A GB1464562 A GB 1464562A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compounds
- alkyl
- formulμ
- carboxylic acid
- acid compounds
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/78—Ring systems having three or more relevant rings
- C07D311/80—Dibenzopyrans; Hydrogenated dibenzopyrans
- C07D311/82—Xanthenes
- C07D311/84—Xanthenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 9
- C07D311/86—Oxygen atoms, e.g. xanthones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyrane Compounds (AREA)
Abstract
1464562 5,7 - Disubstituted xanthone - 2- carboxylic acids SYNTEX (USA) Inc 24 Dec 1974 [8 Jan 1974] 40090/76 Divided out of 1464561 Heading C2C The invention comprises compounds of the formula wherein one R<SP>1</SP> is OH and the other is RS-, RSO- or RSO 2 -R is C 1 -C 5 alkyl or C 3 -C 5 cycloalkyl and R<SP>71</SP> is H or C 1 -C 5 alkyl. They may be obtained by treating the corresponding alkoxy compounds of the formulµ with HI or HBr in the presence of a solvent to give compounds of the formulµ wherein R<SP>9</SP> and R<SP>13</SP> are C 1 -C 5 alkyl or C 3 -C 5 cycloalkyl; and optionally esterifying these compounds with an alkyl halide to give esters of the formulµ and oxidizing any of these compounds as described in Specification 1,398,724 to the required sulphinyl or sulphonyl compounds. The products are useful intermediates in the preparation of pharmaceutically active xanthones.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05431794 US3894049A (en) | 1972-06-05 | 1974-01-08 | Disubstituted xanthone carboxylic acid compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1464562A true GB1464562A (en) | 1977-02-16 |
Family
ID=23713448
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1296674A Expired GB1464561A (en) | 1974-01-08 | 1974-12-24 | Disubstituted xanthone carboxylic acid compounds |
| GB4009076A Expired GB1464562A (en) | 1974-01-08 | 1974-12-24 | Disubstituted xanthone carboxylic acid compounds |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1296674A Expired GB1464561A (en) | 1974-01-08 | 1974-12-24 | Disubstituted xanthone carboxylic acid compounds |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS50126667A (en) |
| AT (1) | AT339297B (en) |
| AU (1) | AU7571774A (en) |
| BE (1) | BE823030R (en) |
| DE (1) | DE2461059A1 (en) |
| DK (1) | DK645674A (en) |
| ES (1) | ES433626A2 (en) |
| FI (1) | FI334874A (en) |
| FR (1) | FR2256755B2 (en) |
| GB (2) | GB1464561A (en) |
| NL (1) | NL7500218A (en) |
| NO (1) | NO744506L (en) |
| SE (1) | SE7415844L (en) |
| ZA (1) | ZA747671B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136227A (en) * | 1983-03-07 | 1984-09-12 | Nat Res Dev | Direct Current Circuit Breakers |
-
1974
- 1974-11-20 FI FI3348/74A patent/FI334874A/fi unknown
- 1974-11-25 AU AU75717/74A patent/AU7571774A/en not_active Expired
- 1974-12-02 ZA ZA00747671A patent/ZA747671B/en unknown
- 1974-12-06 BE BE151224A patent/BE823030R/en active
- 1974-12-11 DK DK645674A patent/DK645674A/da unknown
- 1974-12-13 NO NO744506A patent/NO744506L/no unknown
- 1974-12-17 SE SE7415844A patent/SE7415844L/xx unknown
- 1974-12-23 DE DE19742461059 patent/DE2461059A1/en active Pending
- 1974-12-24 JP JP50001055A patent/JPS50126667A/ja active Pending
- 1974-12-24 GB GB1296674A patent/GB1464561A/en not_active Expired
- 1974-12-24 GB GB4009076A patent/GB1464562A/en not_active Expired
-
1975
- 1975-01-07 ES ES433626A patent/ES433626A2/en not_active Expired
- 1975-01-07 FR FR7500380A patent/FR2256755B2/fr not_active Expired
- 1975-01-08 AT AT9475A patent/AT339297B/en not_active IP Right Cessation
- 1975-01-08 NL NL7500218A patent/NL7500218A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136227A (en) * | 1983-03-07 | 1984-09-12 | Nat Res Dev | Direct Current Circuit Breakers |
Also Published As
| Publication number | Publication date |
|---|---|
| BE823030R (en) | 1975-06-06 |
| GB1464561A (en) | 1977-02-16 |
| FR2256755A2 (en) | 1975-08-01 |
| SE7415844L (en) | 1975-07-09 |
| AT339297B (en) | 1977-10-10 |
| ES433626A2 (en) | 1977-07-01 |
| NL7500218A (en) | 1975-07-10 |
| DK645674A (en) | 1975-09-01 |
| JPS50126667A (en) | 1975-10-04 |
| FI334874A (en) | 1975-07-09 |
| FR2256755B2 (en) | 1978-06-30 |
| AU7571774A (en) | 1976-05-27 |
| ATA9475A (en) | 1977-02-15 |
| ZA747671B (en) | 1976-07-28 |
| NO744506L (en) | 1975-08-04 |
| DE2461059A1 (en) | 1975-07-17 |
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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 |