amonnium chloride in dichloromethane mixt. of organotin compd. and LTA in dry CH2Cl2 stirred at room temp. under N2 for 40 h, quenching with saturated ammonium chloride soln.; aqueous phase removed, extd. with chloroform, combd. organic phase dried, concd., silica gel column chromy. (hexane-chloroform 1:1); elem. anal., IR, NMR, MS;

amonnium chloride in dichloromethane mixt. of organotin compd. and LTA in dry CH2Cl2 stirred at room temp. under N2 for 40 h, quenching with saturated ammonium chloride soln.; aqueous phase removed, extd. with chloroform, combd. organic phase dried, concd., silica gel column chromy. (hexane-chloroform 1:1); elem. anal., IR, NMR, MS;