Mammalian fucosidases. 2. α-<scp>l</scp>-Fucosidase

Abstract

repeating the drying procedure. The yield of the pure lactone was 0*9 g. (46 %). It titrated entirely as a lactone, with ring opening at pH 7*5-8. L-Fuconolactone had m.p. 104-106'; [L]2l + 740 in water (c, 2) (Equivalent weight by titration with NaOH, 171. Calc. for CH1O5, 162). Muther & Tollens (1904) give m.p. 106-107'; [a]D + 780 in water. D-Fuconolactone had m.p. 104-1060; rx]1 -70in water (c, 2) (Equivalent weight by titration with NaOH, 163. Calc. for C63H,005, 162). Voto6ek (1902) gives m.p. 1060; [OC]D -76in water.