Abstract: Compounds of formula (I) or salts thereof: ##STR1## wherein: each R.sub.1 is independently hydrogen or a silyl protecting group; R.sub.2 is a carboxylic acid or derivative thereof; a ketone or aldehyde function; hydroxymethyl in which the hydroxyl function is optionally silylated, or substituted by hydroxy C.sub.1-4 alkyl, alkoxy C.sub.1-4 alkyl, alkoxycarbonyl C.sub.1-4 alkyl, hydroxycarbonyl C.sub.1-4 alkyl, alkyl, alkanoyl, or optionally substituted aryl or aroyl; one of X and Y is hydrogen, and the other is a sugar residue; hydroxy; optionally substituted C.sub.1-6 alkoxy or C.sub.3-8 cycloalkoxy; alkanoyloxy; thioalkanoyloxy; sulphonyloxy; halogen; or optionally substituted aryloxy, aralkyloxy or aroyloxy; or X and Y together with the carbon atom to which they are bonded are a carbonyl group or derivative thereof, are provided; their use as chemical intermediates and in the treatment of fungal infections is described.

Abstract: Compounds of the formula (I), or pharmaceutically acceptable salts thereof: ##STR1## wherein R.sub.1 is --CH.sub.2 OH; R.sub.2 is hydrogen or C.sub.1-8 alkyl; R.sub.3 is hydrogen or an amine protection group; and each R.sub.4 is hydrogen; their preparation, compositions containing them and their use in the treatment of fungal infections are described.