title: Carbon hydroxylation of alkyltetrahydropyranols: a paradigm for spiroacetal biosynthesis in Bactrocera sp.
abstract: [figure: see text] In a number of Bactrocera species the penultimate step in the biosynthesis of spiroacetals is shown to be the hydroxylation of an alkyltetrahydropyranol followed by cyclization. The monooxygenases that catalyze this side chain hydroxylation show a strong preference for oxidation four carbons from the hemiketal center, to produce the spiroacetal. The hydroxy spiroacetals observed in Bactrocera appear to derive from direct oxidation of the parent spiroacetals and not from alternate precursors.
authors: Department of Chemistry, University of Queensland, Brisbane, 4072 Australia.
authors: J E
authors: JE
authors: Stok
authors: C S
authors: CS
authors: Lang
authors: B D
authors: BD
authors: Schwartz
authors: M T
authors: MT
authors: Fletcher
authors: W
authors: W
authors: Kitching
authors: J J
authors: JJ
authors: De Voss
mesh_terms: D000080:Acetals / Q000378:metabolism*; D000818:Animals; D004175:Diptera / Q000378:metabolism*; D005260:Female; D006900:Hydroxylation; D008297:Male; D006899:Mixed Function Oxygenases / Q000378:metabolism; D010084:Oxidation-Reduction; D011714:Pyrans / Q000378:metabolism*; D013141:Spiro Compounds / Q000378:metabolism*
chemical_list: D000080:Acetals; D011714:Pyrans; D013141:Spiro Compounds; D006899:Mixed Function Oxygenases