882305-14-8Relevant articles and documents
Synthesis of (4R,5S)-melithiazols F and I
Takayama, Hiroyuki,Kato, Keisuke,Akita, Hiroyuki
, p. 644 - 649 (2006)
Palladium-catalyzed cyclization-methoxycarbonylation of (2R,3S)-3-methylpenta-4-yne-1,2-diol (8) derived from the (2R,3S)-epoxybutanoate 7 followed by methylation gave the tetrahydro-2-furylidene acetate (-)-9, which was converted into the left-half aldehyde (+)-4. A Wittig reaction between (+)-4 and the phosphoranylide derived from the bithiazole-type phosphonium iodide 5 using lithium bis(trimethylsilyl)-amide afforded (+)-(4R,5S)- melithiazol F (1), whose spectroscopic data were identical with those of the natural product 1. Moreover, the synthesis of (+)-(4R,5S)-melithiazol I (2), was achieved by the same synthetic strategy as that of (+)-(4R,5S)-melithiazol F (1). The antifungal activity of the synthetic melithiazols F (1) and I (2) against the phytopathogenic fungus, Phytophthora capsici, was evaluated by using a paper disc assay method. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.