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γ-Lactones from Iryanthera species by Paulo C. Vieira; Massayoshi Yoshida; Otto R. Gottlieb; Hipólito F.Paulino Filho; Tanus J. Nagem; Raimundo Braz Filho is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is γ-Lactones from Iryanthera species about?

The structure of juruenolide, a constituent of Iryanthera juruensis and 1. ulei is revised to (2S, 3R, 4S)-3hydroxy-4-methyl-2-( 19'-piperonyl-1'-n-nonadecyl)-butanolide. The compound is epimeric at C-3 of the y-lactone unit with grandinolide [ (2S, 3S, 4S)-3-hydroxy-4-methyl-2-(19'-phenyl-l'-n-nonad~yl)-butanolide] from I. grandis. An extract of I. juruensis contained additionally juruenolide-B [ (4S)-4-methyl-2-( 19'-piperonyl-1'-n-nonadec-7'-enyl)-but-2-enolide]. Analogous products with heptadecyl and pentadecyl side chains co-occur with the respective nonadecyl derivatives. PHYTO 223 -F double bond to be situated between C-7'and C-8' of then-108.7 (d, C-5"), 120.8 (d, C-b"), 100.5 (t, CH20Z). Acetate (3b): mp alkyl chain. Inspection of the mass spectrum of 9, the di-83-85" (MeOH). ## epoxylated derivative of 5, confirms this postulate (2S, 3S, 4S)-3-Hydroxy-4-methyl-(19'-phenyl-l'-n-nonadecyl)- through three conspicuous series of peaks. Within each butanolide (grandinolide, 4s). Mp 55-56" (MeOH) (M+ found: series the peaks are spaced 28 a.m.u. apart. Two series, 458.3889; C3,,Hs003 requires: 458.3895). MS m/z (rel. int.): 458 one starting at m/z 261 (lx), and continuing with 23

Who reads γ-Lactones from Iryanthera species?

Author

Paulo C. Vieira; Massayoshi Yoshida; Otto R. Gottlieb; Hipólito F.Paulino Filho; Tanus J. Nagem; Raimundo Braz Filho

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0031-9422)

Published

1983

Language

EL

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)