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■ Absolute Configuration of (+)-PT-Toxin: Enantiodivergent Synthesis of (+)- and (-)-PT-Toxins

Takashi Kamikubo and Kunio Ogasawara*

*Pharnaceutical Institute, Tohoku University, Aramaki, Aoba-ku, sendai 980-77, Japan

Abstract

Absolute configuration of (+)-PT-toxin, isolated from the tea gray blight fungi, Pestalotiopsis longiseta and Pestalotiopsis theae, has been determined unambiguously by enantiocontrolled synthesis of both enantiomers starting from the common chiral-building block.