New oligostilbenes having a benzofuran from Vitis vinifera 'Kyohou'

Tetrahedron

Volumn 55, Issue 9, 1999, Pages 2529-2544

  Ito, Junko ^a   Takaya, Yoshiaki ^b   Oshima, Yoshiteru ^b   Niwa, Masatake ^a  

^a MEIJO UNIVERSITY   (Japan)

^b TOHOKU UNIVERSITY   (Japan)

Author keywords

Benzofurans; Dehydrogenation; Natural products; Oligomers

Indexed keywords

DIHYDROBENZOFURAN DERIVATIVE; PLANT EXTRACT; STILBENE DERIVATIVE; UNCLASSIFIED DRUG; VINIFERIN; VITISIN A;

ARTICLE; CHEMICAL REACTION KINETICS; DRUG ISOLATION; DRUG STRUCTURE; HERBAL MEDICINE; PRIORITY JOURNAL; REACTION ANALYSIS; SPECTROSCOPY; STRUCTURE ANALYSIS;

EID: 0033605412     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4020(99)00039-3     Document Type: Article

References (10)

1. Ito, J.; Niwa, M. Tetrahedron 1996, 52, 9991.
2. Ito, J.; Niwa, M.; Oshima, Y. Heterocycles 1997, 45, 1809.
3. Shinoda, K.; Takaya, Y.; Ohta, T.; Niwa, M.; Hisamichi, K.; Takeshita, M.; Oshima, Y. Heterocycles 1997, 46, 169.
4. Ito, J.; Gobaru, K.; Shimamura, T., Niwa, M.; Takaya, Y.; Oshima, Y. Tetrahedron 1998, 54, 6651.
5. Langcake, P.; Pryce, R. J. Experientia 1977, 33, 151.
6. Oshima, Y.; Kamijou, A.; Ohizumi, Y.; Niwa, M.; Ito, J.; Hisamichi, K.; Takeshita, M. Tetrahedron 1995, 51, 11979.
7. In the HMBC spectrum of 20, cross peaks between H-14c and C-8c, H-2b and C-8c, H-7d and C-2d (6d), and H-8d and C-10d (14d) were respectively observed.
8. In the HMBC spectrum of 21, cross peaks between H-10a (14a) and C-8a, H-2a (6a) and C-7a, H-7d and C-2d (6d), and H-8d and C-10d (14d) were respectively observed.
9. In the HMBC spectrum of 22, cross peaks between H-7d and C-2d (6d), and H-8d and C-10d (14d) were respectively observed.
10. Kurihara, H; Kawabata, J; Ichikawa, S; Mizutani, J. Agric. Biol. Chem. 1 990, 54, 1097.