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    Reduction of triterpenoid ketones with bornan-2-exo-yloxyaluminium dichloride: a convenient preparation of axial triterpene alcohols

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    Reduction of 3-oxo-triterpenoids with bornan-2-exo-yloxyaluminium dichloride furnishes axial (3 α-) alcohols as the major products (75-100%), which are easily separable from the reaction mixtures. Reduction with sodium borohydride gives mainly the 3α-alcohols (85-95%)

    Abstract

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