Synthesis and nuclear magnetic resonance study of 3‐dehydroecdysteroids | Zendy

Girault JeanPierre | Zendy; Blais Catherine | Zendy; Beydon Philippe | Zendy; Rolando Christian | Zendy; Lafont René | Zendy

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Synthesis and nuclear magnetic resonance study of 3‐dehydroecdysteroids

Author(s) -

Girault JeanPierre,

Blais Catherine,

Beydon Philippe,

Rolando Christian,

Lafont René

Publication year - 1989

Publication title -

archives of insect biochemistry and physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.576

H-Index - 66

eISSN - 1520-6327

pISSN - 0739-4462

DOI - 10.1002/arch.940100304

Subject(s) - chloroform , methanol , nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , proton magnetic resonance , proton nmr , proton , chromatography , chemistry , organic chemistry , physics , nuclear physics

Several 3‐dehydro‐ (or 3‐oxo‐) ecdysteroids have been prepared by enzymatic and/or chemical means. Methods for their purification using various high‐performance liquid chromatography systems are described. Proton and carbon nuclear magnetic resonance analyses show that 3‐dehydroecdysteroids when dissolved in water or methanol (but not in chloroform) present a temperature‐dependent equilibrium between two forms. The possible structure of these two forms is discussed.

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