J Integr Plant Biol. ›› 1982, Vol. 24 ›› Issue (2): -.

• Research Articles •    

The Isolation and Identification of Morin and Morin-calcium Chelate Compound from Artocapus pithecogallus C.Y. Wu. and Artocapus heterophYllus Lan.

Mu Quan-zhang and Li Qi-xun   

Abstract: Two crystalline compounds were isolated from the heartwood Artocapus pitheco- gallus C. Y. Wu. and A. heterophyllus Lans. collected at Yunnan. On the basis of spectral analysis (UV, IR, NMR, MS and ¹³C NMR), preparation of derivatives and synthetic, these compounds were identified as morin(2, 4, 5, 7-tetrahydroxyflavonol (I) and morin-calcium chelate compound (H) which the hydrogen of C5-OH of two morin molecules is replaced by a calcium atom, and chelated with C4--C0 of the morin formed a chelate ring, and the calcium ion chelated with another molecular at C4-C0 too, in which the calcium is a constituent of an inner complex anion. Compound (Ⅱ) Ca(C15H9O7)2·5H2O is a new compound which is green yellow crystal, mp. to be greater than 300 C, rose red with Mg-HC1; orange yellow precip- tare with Pb(AC)2; the solid and solution of (Ⅱ) dispaly intense orange yellow fluorescence in ultraviolet, and calcium was detected by its atomic spectrum and treated with 2% ehlorhydric acid gives (Ⅰ). We have prepared morin-calcium chelate compound from morin. The chemical properties and spectroscopic data (UV, IR, NMR) of synthetic and natural products are all the same.

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