dimethylsulfide borane complex; mono-n-butyltin trichloride in dichloromethane 3 h; Ambient temperaturereductive cleavage of permethylated mono- and polysaccharides with borane-dimethyl sulfide complex and butyltin trichloride; time-course of reductive cleavage; Product distribution;

titanium tetrachloride in dichloromethane T=25°C; 1 h; Yield given;