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Your search keyword '"chroman derivative"' showing total 3 results
Start Over Descriptor "chroman derivative" Publication Year Range More than 50 years ago
3 results on '"chroman derivative"'

1. ChemInform Abstract: SYNTHESIS OF NEOBAVAISOFLAVONE

Author

Toshihide Yamada, Masao Tsukayama, Mitsuo Masumura, Tokunaru Horie, Mitsuru Nakayama, and Shûichi Hayashi

Subjects
chemistry.chemical_compound, Hydrolysis, Chemistry, Hydrogenolysis, Formic acid, Condensation, Daidzein, Neobavaisoflavone, General Medicine, Alkali metal, Chroman derivative, Medicinal chemistry
Abstract

Condensation of 7-benzoyldaidzein (III) with 2-methyl-3-buten-2-ol gave 7-benzoyl-3′-(3-methyl-2-butenyl)daidzein (IV). Hydrolysis of IV with dilute alkali gave 3′-(3-methyl-2-butenyl)daidzein (neobavaisoflavone) (I), which was converted into isoneobavaisoflavone (VI) when heated with formic acid. 7-Benzyldaidzein (VII) was condensed with 2-methyl-3-buten-2-ol to give a chroman derivative (VIII), which was converted into VI by hydrogenolysis.

Published
1975
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2. SYNTHESIS OF NEOBAVAISOFLAVONE

Author

Toshihide Yamada, Shûichi Hayashi, Mitsuo Masumura, Mitsuru Nakayama, Masao Tsukayama, and Tokunaru Horie

Subjects
Hydrolysis, chemistry.chemical_compound, Chemistry, Hydrogenolysis, Formic acid, Daidzein, Condensation, Neobavaisoflavone, Organic chemistry, General Chemistry, Alkali metal, Chroman derivative
Abstract

Condensation of 7-benzoyldaidzein (III) with 2-methyl-3-buten-2-ol gave 7-benzoyl-3′-(3-methyl-2-butenyl)daidzein (IV). Hydrolysis of IV with dilute alkali gave 3′-(3-methyl-2-butenyl)daidzein (neobavaisoflavone) (I), which was converted into isoneobavaisoflavone (VI) when heated with formic acid. 7-Benzyldaidzein (VII) was condensed with 2-methyl-3-buten-2-ol to give a chroman derivative (VIII), which was converted into VI by hydrogenolysis.

Published
1975
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3. Vitamin E: Structure of β -Tocopherol

Author

F. Bergel, A. R. Todd, A. Jacob, and T. S. Work

Subjects
Multidisciplinary, medicine.anatomical_structure, Chemistry, Stereochemistry, Vitamin E, medicine.medical_treatment, medicine, Side chain, Tocopherol, Nucleus, Chroman derivative
Abstract

IN a recent publication1 we indicated that β-tocopherol, C28H48O2, might be a coumaran or chroman derivative bearing a long side chain in the heterocyclic nucleus.

Published
1938
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