American Cyanamid Company

Michael J Dawson

David Noble

Gordon C Lawrence

Richard A Fletton

Michael V Ramsay

Derek R Sutherland

Edward P Tiley

Stephen J Lane

Richard Bell

Oswy Z Pereira

Compounds of formula (1) ##STR1## wherein R represents a sugar residue or an acylated derivative thereof;

Macrolide compounds

Compounds of formula (1) ##STR1## and their salts, wherein R.sup.1 is a methyl, ethyl or isopropyl group each substituted by a hydroxyl group or R.sup.1 is a group --(CH.sub.2).sub.n R7 or a group --CH(CH.sub.3)R.sup.7 (where n is zero or 1 and R.sup.7 l is CHO or CO.sub.2 H);

Compounds of formula (1) ##STR1## and salts thereof, wherein R.sup.1 represents a methyl, ethyl or isopropyl group;

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Ickenham, United Kingdom

Michael J Dawson