Conformational analysis of c3′‐c8 connected biflavones | Zendy

Konda Yaeko | Zendy; Sasaki Tomomitsu | Zendy; Kagawa Hitoshi | Zendy; Takayanagi Hiroaki | Zendy; Harigaya Yoshihiro | Zendy; Sun XueLong | Zendy; Li Xian | Zendy; Onda Masayuki | Zendy

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Conformational analysis of c3′‐c8 connected biflavones

Author(s) -

Konda Yaeko,

Sasaki Tomomitsu,

Kagawa Hitoshi,

Takayanagi Hiroaki,

Harigaya Yoshihiro,

Sun XueLong,

Li Xian,

Onda Masayuki

Publication year - 1995

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570320521

Subject(s) - chemistry , stereochemistry , two dimensional nuclear magnetic resonance spectroscopy , crystallography

Two biflavones isolated from Taxus cuspidata were identified with ginkgetin (1) and sciadopitysin (2) which belong to C3′‐C8 connected biflavones. The conformation of 2 in the solid state was determined by X‐ray analysis and the conformations of 1 and 2 in the liquid state were discussed using nmr techniques. Complete assignments of 1 H and 13 C nmr spectra about 1 were made on the basis of COSY, HMQC, HMBC and nOe experiments.

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