CH617200A5 - - Google Patents

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Publication number
CH617200A5
CH617200A5 CH281676A CH281676A CH617200A5 CH 617200 A5 CH617200 A5 CH 617200A5 CH 281676 A CH281676 A CH 281676A CH 281676 A CH281676 A CH 281676A CH 617200 A5 CH617200 A5 CH 617200A5
Authority
CH
Switzerland
Prior art keywords
oxo
stretching
dihydro
pyran
formula
Prior art date
Application number
CH281676A
Other languages
German (de)
English (en)
Inventor
Tatsuya Shono
Yoshihiro Matsumura
Original Assignee
Otsuka Kagaku Yakuhin
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 Otsuka Kagaku Yakuhin filed Critical Otsuka Kagaku Yakuhin
Publication of CH617200A5 publication Critical patent/CH617200A5/de

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
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/20—Synthetic spices, flavouring agents or condiments

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Epoxy Compounds (AREA)
  • Pyrane Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Plural Heterocyclic Compounds (AREA)
CH281676A 1975-07-17 1976-03-05 CH617200A5 (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50087940A JPS5212166A (en) 1975-07-17 1975-07-17 Process for preparation of 4-pyron derivatives

Publications (1)

Publication Number Publication Date
CH617200A5 true CH617200A5 (fi) 1980-05-14

Family

ID=13928886

Family Applications (2)

Application Number Title Priority Date Filing Date
CH281676A CH617200A5 (fi) 1975-07-17 1976-03-05
CH281776A CH619700A5 (fi) 1975-07-17 1976-03-05

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH281776A CH619700A5 (fi) 1975-07-17 1976-03-05

Country Status (8)

Country Link
US (1) US4059595A (fi)
JP (1) JPS5212166A (fi)
BE (2) BE844193A (fi)
CH (2) CH617200A5 (fi)
DE (2) DE2608932C2 (fi)
FR (2) FR2318161A1 (fi)
GB (2) GB1498365A (fi)
IT (2) IT1063916B (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342697A (en) * 1975-08-28 1982-08-03 Pfizer Inc. Preparation of gamma-pyrones
IE42789B1 (en) * 1975-08-28 1980-10-22 Pfizer Preparation of gamma-pyrones
JPS532468A (en) * 1976-06-15 1978-01-11 Otsuka Chem Co Ltd 2,2-bis(3,4-epoxy-5-oxotetrahydropyrane)-ethers and method of preparing the same
CA1095921A (en) * 1976-08-02 1981-02-17 Thomas M. Brennan Preparation of gamma-pyrones
JPS5353613U (fi) * 1976-10-11 1978-05-09
US4390709A (en) * 1976-11-11 1983-06-28 Pfizer Inc. Preparation of gamma-pyrones
US4191693A (en) * 1976-11-12 1980-03-04 Pfizer, Inc. Preparation of gamma-pyrones from 3-substituted furans
JPS5481273A (en) * 1977-12-12 1979-06-28 Shin Etsu Chem Co Ltd Preparation of pyranone halide
US4451661A (en) * 1982-04-26 1984-05-29 Pfizer Inc. Preparation of gamma-pyrone intermediates

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159652A (en) * 1962-06-13 1964-12-01 Pfizer & Co C Preparation of gamma-pyrones
US3476778A (en) * 1966-05-16 1969-11-04 Monsanto Co Gamma-pyrone synthesis
US3491122A (en) * 1966-09-14 1970-01-20 Monsanto Co Synthesis of 4-pyrones
JPS5145565B1 (fi) * 1968-10-12 1976-12-04

Also Published As

Publication number Publication date
CH619700A5 (fi) 1980-10-15
FR2318161B1 (fi) 1978-08-25
DE2608932C2 (de) 1982-07-08
DE2608932A1 (de) 1977-01-20
IT1063916B (it) 1985-02-18
BE844194A (fr) 1976-11-16
DE2609888C3 (de) 1979-05-10
DE2609888B2 (de) 1978-09-07
GB1498365A (en) 1978-01-18
BE844193A (fr) 1976-11-16
DE2609888A1 (de) 1977-01-20
US4059595A (en) 1977-11-22
IT1063914B (it) 1985-02-18
GB1496992A (en) 1978-01-05
FR2317921B1 (fi) 1978-09-22
JPS5212166A (en) 1977-01-29
JPS5412465B2 (fi) 1979-05-23
FR2317921A1 (fr) 1977-02-11
FR2318161A1 (fr) 1977-02-11

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Legal Events

Date Code Title Description
PL Patent ceased