Synthesis of xanthones by daylight photooxidative cyclization of (E)-2-styrylchromones

Heterocyclic Communications

Volumn 2, Issue 3, 1996, Pages 251-254

  Silva, Artur M S ^a   Tavares, Hllário R ^a   Cavaleiro, José A S ^a  

^a UNIVERSITY OF AVEIRO   (Portugal)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0009523459     PISSN: 07930283     EISSN: None     Source Type: Journal    
DOI: 10.1515/HC.1996.2.3.251     Document Type: Article

References (8)

1. K. Hostettmann and M. Hostettmann, Xanthones, in J. B. Harborne (Ed.), Methods in Plant Biochemistry, Academic Press, London, 1989, Vol. 1, pp 493.
2. F. M. Dean, Xanthones, in J. Apsimon (Ed.), The Total Synthesis of Natural Products, Wiley-Interscience, New York, 1973, Vol. 1, pp 534.
3. K. A. Kumar and G. Srimannarayana, Indian J. Chem. 19B, 615 (1980).
4. I. Yokoe, K. Higuchi, Y, Shirataki and M. Komatsu, Chem. Pharm. Bull. 29, 2670 (1981).
5. a) J. A. S. Cavaleiro, J. Elguero, M. L. Jimeno and A. M. S. Silva, Chem. Lett. 445 (1991).
6. b) A. M. S. Silva, D. C. G. A. Pinto and J. A. S. Cavaleiro, Tetrahedron Lett. 35, 5899 (1994).
7. 3), 111.0 (C-3), 117.9 (C-8), 123.9 (C-10), 125.0 (C-6), 125.4 (C-5), 127.6 (C-4′), 128.1 (C-3′,5′), 128.4 (C-2′,6′), 128.9 (C-α), 133.6 (C-7), 135.2 (C-β), 136.6 (C-1′), 155.9 (C-9), 165.1 (C-2), 178.3 (C-4).
8. 3), 114.4 (C-11a), 117.6 (C-8), 123.4 (C-12a), 124.3 (C-10), 126.1 (C-3), 126.6 (C-1), 126.7 (C-12b), 126.7 (C-11), 127.5 (C-4), 128.5 (C-2), 129.9 (C-4a), 130.1 (C-6), 133.8 (C-9), 136.1 (C-5), 154.5 (C-7a), 156.8 (C-6a), 178.8 (C-12).