DK54180A - PROCEDURE FOR THE PREPARATION OF Xanthone DERIVATIVES - Google Patents

PROCEDURE FOR THE PREPARATION OF Xanthone DERIVATIVES

Info

Publication number
DK54180A
DK54180A DK54180A DK54180A DK54180A DK 54180 A DK54180 A DK 54180A DK 54180 A DK54180 A DK 54180A DK 54180 A DK54180 A DK 54180A DK 54180 A DK54180 A DK 54180A
Authority
DK
Denmark
Prior art keywords
preparation
procedure
formula
compounds
carbon atoms
Prior art date
Application number
DK54180A
Other languages
Danish (da)
Other versions
DK145948B (en
DK145948C (en
Inventor
A C Barnes
P D Kennewell
Original Assignee
Roussel Uclaf
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Roussel Uclaf filed Critical Roussel Uclaf
Publication of DK54180A publication Critical patent/DK54180A/en
Publication of DK145948B publication Critical patent/DK145948B/en
Application granted granted Critical
Publication of DK145948C publication Critical patent/DK145948C/en

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

Abstract

A process for the preparation of compounds of general formula I, <IMAGE> (wherein R represents a hydrogen atom or an alkyl radical containing from 1 to 9 carbon atoms and R1 represents an alkyl radical containing from 1 to 5 carbon atoms) which comprises cyclising a compound of formula II, <IMAGE> (wherein R and R1 are as defined above, Ar represents an aryl group and R2 and R3, which may be the same or different, each represents an esterifying group) followed if required, by hydrolysis to the free acid of formula I. The compounds of general formula I possess interesting anti-allergic activity.
DK54180A 1979-02-09 1980-02-08 PROCEDURE FOR PREPARING SULPHONIMIDOYLXANTHON-2-CARBOXYLIC ACID DERIVATIVES DK145948C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7904649 1979-02-09
GB7904649 1979-02-09

Publications (3)

Publication Number Publication Date
DK54180A true DK54180A (en) 1980-08-10
DK145948B DK145948B (en) 1983-04-25
DK145948C DK145948C (en) 1983-09-26

Family

ID=10503083

Family Applications (1)

Application Number Title Priority Date Filing Date
DK54180A DK145948C (en) 1979-02-09 1980-02-08 PROCEDURE FOR PREPARING SULPHONIMIDOYLXANTHON-2-CARBOXYLIC ACID DERIVATIVES

Country Status (15)

Country Link
EP (1) EP0016665B1 (en)
JP (1) JPS55108867A (en)
AT (1) ATE967T1 (en)
AU (1) AU531013B2 (en)
CA (1) CA1146571A (en)
DE (1) DE3060348D1 (en)
DK (1) DK145948C (en)
ES (1) ES488385A0 (en)
FI (1) FI800392A (en)
GB (1) GB2042540B (en)
HU (1) HU180552B (en)
IE (1) IE49389B1 (en)
IL (1) IL59046A (en)
PT (1) PT70795B (en)
ZA (1) ZA80141B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL47519A (en) * 1974-07-09 1979-03-12 Roussel Uclaf 7-sulphinimidoyl(sulphimidoyl)-xanthone-2-carboxylic acid derivatives, their preparation and pharmaceutical compositions containing them
JPS5850225B2 (en) * 1976-01-01 1983-11-09 ルセル・ユクラフ Novel xanthones, their salts and esters, and pharmaceuticals comprising these compounds
SE445346B (en) * 1978-03-03 1986-06-16 Roussel Uclaf SET TO PREPARE 7-SULPHONIMIDOYL-XANTON-2-CARBOXYLIC ACID DERIVATIVE

Also Published As

Publication number Publication date
PT70795B (en) 1981-06-11
EP0016665A1 (en) 1980-10-01
ATE967T1 (en) 1982-05-15
IE800250L (en) 1980-08-09
IE49389B1 (en) 1985-10-02
DK145948B (en) 1983-04-25
JPH0144710B2 (en) 1989-09-29
FI800392A (en) 1980-08-10
ES8102115A1 (en) 1980-12-16
AU531013B2 (en) 1983-08-04
IL59046A0 (en) 1980-03-31
PT70795A (en) 1980-03-01
AU5535080A (en) 1980-08-14
DK145948C (en) 1983-09-26
JPS55108867A (en) 1980-08-21
HU180552B (en) 1983-03-28
GB2042540B (en) 1982-11-24
CA1146571A (en) 1983-05-17
DE3060348D1 (en) 1982-06-24
IL59046A (en) 1985-03-31
ES488385A0 (en) 1980-12-16
EP0016665B1 (en) 1982-05-05
GB2042540A (en) 1980-09-24
ZA80141B (en) 1981-02-25

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Legal Events

Date Code Title Description
PBP Patent lapsed