Journal of Medicinal Chemistry p. 834 - 840 (1989)
Update date:2022-08-02
Topics:
Kagechika, Hiroyuki
Kawachi, Emiko
Hashimoto, Yuichi
Shudo, Koichi
The structure-activity relationships of (E)-chalcone-4-carboxylic acids, which are retinoidal benzoic acids represented by R-Ph-X-Ph-COOH (4, X=-COCH=CH-), are discussed on the basis of differentiation-inducing activity on human promyelocytic leukemia cells HL-60.The activity was increased by the substitution of a bulky alkyl group(s) (R), and among such compounds, (E)-4-<3-(3,5-di-tert-butylphenyl)-3-oxo-1-propenyl>benzoic acid (Ch55) and (E)-4-<3-oxo-3-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)-1-propenyl>benzoic acid (Ch80) are several times more active than retinoic acid.Though the stable conformer of chalcone derivatives is linear (s-cis form), the conformationally restricted analogue 4-(6,7,8,9-tetrahydro-6,6,9,9-tetramethyl-4H-4-oxonaphtho<2,3-b>pyran-2-yl)benzoic acid (Fv80) is more active than Ch80.While the effect of introduction of an oxygen atom varied, 4-<1-hydroxy-3-oxo-3-(5,6,7,8-tetrahydro-3-hydroxy-5,5,8,8-tetramethyl-2-naphthalenyl)-1-propenyl>benzoic acid (Re80), regarded as a derivative of Ch80 with two additional hydroxyl groups, has very strong activity.
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