Organogermanium Compounds. New Simplified Synthesis of Germatranes Substituted with Novel Functional Groups

Abstract
New general methods for the synthesis of 5-substituted germatranes [showing antitumor activity] (4) were directly developed using the corresponding germyl adducts (2) obtained by germylation of .alpha.,.beta.-unsaturated compounds (1) with trichlorogermane.
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