A facile and practical preparation of 5,7-dihydroxy-3-(4-nitrophenyl)-4H-1-benzopyran-4-one
✍ Scribed by D. F. Liu; C. C. Cheng
- Book ID
- 112130148
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1991
- Tongue
- English
- Weight
- 179 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-152X
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The title compound, also known as intricatinol, C~17~H~14~O~5~, is a homoisoflavanoid that was isolated for the first time from the twigs and stems of __Caesalpinia digyna__ Rottler. The pyran ring is in an envelope form. O—H...O intramolecular hydrogen bonds are observed. Symmetry-related molecules
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The title compound, C 17 H 14 O 5 , a flavone, was isolated from the rhizomes of Kaempferia parviflora. There are two crystallographically independent molecules in the asymmetric unit. The molecular structure is stabilized by intramolecular O-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds. C-HÁ Á ÁO intermole