Tetrahedron

Synthesis of oryzalexins A, B and C, the diterpenoidal phytoalexins isolated from rice blast leaves infected with Pyricularia oryzae

K Mori, M Waku

Index: Mori, Kenji; Waku, Michiru Tetrahedron, 1985 , vol. 41, # 23 p. 5653 - 5660

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Citation Number: 27

Abstract

Naturally occurring enantiomers of three diterpenes isolated as phytoalexins from rice blast leaves were synthesized:(+)-oryzalexin. A [ent-3β-hydroxyisopimara-8 (14), 15-dien-7-one, 1],(+)-oryzalexin B [ent-7α-hydroxyisopimara-8 (14), 15-dien-3-one, 2] and (+)-oryzalexin C [ent-isopimara-8 (14), 15-diene-3, 7-dione, 3]. Their antipodes were also synthesized.