GB1321879A - Di-carboxybenzopyrano-benzopyrans - Google Patents

Di-carboxybenzopyrano-benzopyrans

Info

Publication number
GB1321879A
GB1321879A GB6191570A GB1321879DA GB1321879A GB 1321879 A GB1321879 A GB 1321879A GB 6191570 A GB6191570 A GB 6191570A GB 1321879D A GB1321879D A GB 1321879DA GB 1321879 A GB1321879 A GB 1321879A
Authority
GB
United Kingdom
Prior art keywords
dec
alkoxy
halogen
adjacent pair
reactions
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
Application number
GB6191570A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fisons Ltd
Original Assignee
Fisons Ltd
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 Fisons Ltd filed Critical Fisons Ltd
Publication of GB1321879A publication Critical patent/GB1321879A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
    • C07D493/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/54—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of compounds containing doubly bound oxygen atoms, e.g. esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicinal Preparation (AREA)

Abstract

1321879 Medicines for combating antigenantibody reactions FISONS Ltd 6 Dec 1971 [30 Dec 1970] 61915/70 Heading A5B [Also in Division C2] Therapeutic compositions for treating conditions due to antigen-antibody reactions by oral or rectal administration, or by inhalation, comprise compounds of formula: and their pharmaceutically acceptable derivatives. wherein an adjacent pair of P, Q, R, T and an adjacent pair of Pa, Qa, Ra, Ta, each represent a -COCH:C(CO 2 H)O- group (attached in either sense) and the remainder of the symbols each represent alkyl, alkoxy, alkenyl or alkenyloxy (any of which may be OH-, alkoxy- or halogen-substituted), or H, acyl, OH or halogen. The compositions may also contain a bronchodilator such as isoprenaline, e.g. as sulphate.
GB6191570A 1970-12-30 1970-12-30 Di-carboxybenzopyrano-benzopyrans Expired GB1321879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6191570 1970-12-30

Publications (1)

Publication Number Publication Date
GB1321879A true GB1321879A (en) 1973-07-04

Family

ID=10487627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6191570A Expired GB1321879A (en) 1970-12-30 1970-12-30 Di-carboxybenzopyrano-benzopyrans

Country Status (7)

Country Link
CA (1) CA964271A (en)
CH (1) CH550784A (en)
DE (1) DE2163869A1 (en)
FR (1) FR2120095B1 (en)
GB (1) GB1321879A (en)
IL (1) IL38310A (en)
NL (1) NL7118101A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449810A (en) * 1972-12-05 1976-09-15 Fisons Ltd Benzo-or naphtho-dipyran-di-n-tetrazolyl- -carboxamide derivative methods for their production and compositions containing them

Also Published As

Publication number Publication date
IL38310A0 (en) 1972-02-29
DE2163869A1 (en) 1972-07-20
FR2120095B1 (en) 1975-06-13
IL38310A (en) 1975-06-25
FR2120095A1 (en) 1972-08-11
CA964271A (en) 1975-03-11
NL7118101A (en) 1972-07-04
CH550784A (en) 1974-06-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees