KM PIETRUSIEWICZ*, 11. ZABLOCKA and W .WISNIEWSKI The Polish Academy of Sciences. Centre of Molecular and Macro- molecular Studies, Sienkiewicza 1 12, 90-362 E6di, Poland ... Abstract A large variety of structcrally diversified optically active phosphine oxides can be derived from a single readily available homochiral (-)-S-methylphenylvinylphosphine oxide through elaboration of its versatile vinyl functionality. ... Optically active compounds ...