ES394980A1 - Substituted benzopyrans and their preparation - Google Patents

Substituted benzopyrans and their preparation

Info

Publication number
ES394980A1
ES394980A1 ES394980A ES394980A ES394980A1 ES 394980 A1 ES394980 A1 ES 394980A1 ES 394980 A ES394980 A ES 394980A ES 394980 A ES394980 A ES 394980A ES 394980 A1 ES394980 A1 ES 394980A1
Authority
ES
Spain
Prior art keywords
preparation
carbon atoms
general formula
benzopyrans
aliphatic group
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
ES394980A
Other languages
Spanish (es)
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.)
Beecham Group PLC
Original Assignee
Beecham Group PLC
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 Beecham Group PLC filed Critical Beecham Group PLC
Publication of ES394980A1 publication Critical patent/ES394980A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond

Landscapes

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

Abstract

A procedure for the preparation of new benzopyrans of general formula (II) ** (See formula) ** (where R1 is a lower aliphatic group; R2 is an aliphatic group of 1 to 20 carbon atoms; R3 is an optionally substituted hydrocarbon group of 1 to 20 carbon atoms; and X is a hydroxyl group or an etherified, esterified or salified thereof) and the N-oxides, acid addition salts and quaternary salts thereof, the process comprising the reduction with a borohydride of a compound of general formula (III) ** (See formula) ** where B- is an anion. (Machine-translation by Google Translate, not legally binding)
ES394980A 1970-09-14 1971-09-10 Substituted benzopyrans and their preparation Expired ES394980A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7221770A 1970-09-14 1970-09-14

Publications (1)

Publication Number Publication Date
ES394980A1 true ES394980A1 (en) 1974-12-01

Family

ID=22106286

Family Applications (1)

Application Number Title Priority Date Filing Date
ES394980A Expired ES394980A1 (en) 1970-09-14 1971-09-10 Substituted benzopyrans and their preparation

Country Status (14)

Country Link
AT (1) AT308108B (en)
BE (1) BE772492A (en)
CA (1) CA965421A (en)
CH (1) CH559209A5 (en)
DE (1) DE2145320A1 (en)
DK (1) DK135994B (en)
ES (1) ES394980A1 (en)
FR (1) FR2106490B1 (en)
GB (1) GB1360009A (en)
IE (1) IE35636B1 (en)
NL (1) NL7112521A (en)
NO (1) NO134743C (en)
SE (1) SE372943B (en)
ZA (1) ZA716039B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960880A (en) * 1974-03-26 1976-06-01 Beecham Group Limited Tetrahydropyrid-4-yl-chroman-5-ol derivatives
JPS4995978A (en) * 1973-01-24 1974-09-11
GB1417745A (en) * 1973-07-07 1975-12-17 Beecham Group Ltd Chromene compounds

Also Published As

Publication number Publication date
NO134743C (en) 1976-12-08
DE2145320A1 (en) 1972-03-16
NO134743B (en) 1976-08-30
NL7112521A (en) 1972-03-16
IE35636L (en) 1972-03-14
DK135994C (en) 1977-12-27
CH559209A5 (en) 1975-02-28
GB1360009A (en) 1974-07-17
BE772492A (en) 1972-03-10
FR2106490A1 (en) 1972-05-05
AT308108B (en) 1973-06-25
AU3336571A (en) 1973-03-15
FR2106490B1 (en) 1975-04-18
ZA716039B (en) 1972-07-26
CA965421A (en) 1975-04-01
IE35636B1 (en) 1976-04-14
SE372943B (en) 1975-01-20
DK135994B (en) 1977-07-25

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