Isolation and Crystal Structure of 1',4'-Trans-diol of Abscisic Acid

1 INTRODUCTION It has been reported that botrytis cinerea, a plant pathogenic fungus, can produce abscisic acid ((2- cis,4-trans)-5-(1-hydroxy-2,6,6-trimethyl-4-oxo-2- cyclohexen-1-yl)-3-methyl-2,4-pentadienoic acid 1)[1] and 1?,4?-trans-diol of abscisic acid 2 that is a pre- cursor of 1[2]. Abscisic acid is an important plant hormone that can inhibit the germination of seeds[3]. Meanwhile, the derivatives of 2, 1?,4?-trans-diol of abscisic acid ester 3 and 4?-methoxy derivative 4, are oil…

Isolation and Crystal Structure of 1',4'-Trans-diol of Abscisic Acid

1',4'-Trans-diol of abscisic acid was isolated from botrytis cinerea as a colorless crystal. The molecular and crystal structures have been determined by X-ray diffraction analysis. It crystallizes in orthorhombic system, space group P212121 with a = 6.724(3), b = 17.559(6), c = 12.265(2) , α = β = γ = 90o, V = 1448.1(8) 3, Z = 4, Dx = 1.222 g/cm3, F(000) = 576 and μ(MoKa) = 0.087 mm-1. The final R = 0.0628 and wR = 0.1604 for 2501 independent reflections with Rint = 0.0160 and 1679 observed reflections with I >2σ(I). There are three intermolecular hydrogen bonds in a unit cell.