Structure of visnagin, 4-methoxy-7-methyl-5H-furo[3,2-g][1]benzopyran-5-one
β Scribed by El-Sayed, K. ;Ammon, H. L. ;El-Rahman, A. M. A.
- Book ID
- 119771067
- Publisher
- International Union of Crystallography
- Year
- 1988
- Tongue
- English
- Weight
- 300 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0108-2701
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## Abstract Synthesis of the linear and angular furoquinolinβ4βone derivatives 6 and 12 was performed, using nitrobenzofurans 3 and 9 as key intermediates. These compounds were reduced to the corresponding aminobenzofurans 4 and 10, which were condensed in two steps to yield, the linear furoquinoli
Redetermination of the Crystal Structure of Khellin, 4,9-dimethoxy-7-methyl-5H-furo(3,2-g) (1) -benzopyran, ## C14H1205 The crystals of this compound are monoclinic with space group P2,/n. The unit cell parameters were derived from least squares fit of the angular data for 24 high angle reflectio