732. Apiin

Nomenclature

CAS number: 26544-34-3
7-[(2-O-d-Apio-β-d-furanosyl-β-d-glucopyranosyl)oxy]-5-hydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one; 4′,5,7-trihydroxyflavone-7-apiosylglucoside; apigenin-7-apiosylglucoside; apioside.
C26H28O14; mol wt 564.49.
C 55.32%, H 5.00%, O 39.68%.

Description and references

Isoln from parsley and from celery: Vongerichten, Ber. 33, 2334, 2904 (1900); Gupta, Seshadri, Proc. Indian Acad. Sci. 35A, 242 (1952), C.A. 47, 3306c (1953); Rahman, Z. Naturforsch. 13b, 201 (1958). Structure: Vongerichten, Ann. 318, 121 (1901); Marchlewski, Skarzynski, Biochem. Z. 297, 56 (1938); Hemming, Ollis, Chem. Ind. (London) 1953, 85.

Chemical structure

Properties

Crystals from ethanol, mp 230-232°. uv max (96% ethanol): 267.5, 342.5 nm (log ε 4.18, 4.30). Sol in hot water, hot alcohol; practically insol in ether. Sol in Na2CO3 or NH3 solns with intense yellow color, in NaOH with pale yellow color.