INTRAMOLECULAR (3+2) CYCLOADDITION REACTIONS IN THE INDOLE SERIES "THE NITRILE OXIDE ROUTE TO THE ERGOT ALKALOIDS". I: CHANOCLAVINE IKOZIKOWSKI AP; ISHIDA H.1980; J. AMER. CHEM. SOC.; USA; DA. 1980; VOL. 102; NO 12; PP. 4265-4267; BIBL. 14 REF.Article

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