7-O-p-ethylbenzyl-25-O-methyl-26-O-t-butyldimethylsilylmonensin methyl ester

4-{2-[2-ethyl-5'-(6-hydroxymethyl-6-methoxy-3,5-dimethyl-tetrahydro-pyran-2-yl)-3'-methyl-octahydro-[2,2']bifuranyl-5-yl]-9-methoxy-2,8-dimethyl-1,6-dioxa-spiro[4.5]dec-7-yl}-3-methoxy-2-methyl-pentanoic acid methyl ester

7-O-methyl-25-O-methyl-25-formylmonensin methyl ester

25-O-methyl-25-carboxymonensin

7-O-methyl-25-O-methyl-25-carboxymonensin