(1S,2'S,4R,6S)-4-acetoxy-1-(2'-benzyloxycarbonylamino-3'-hydroxy-propyl)-6-hydroxy-2-cyclohexen-1-ol

(1S,2'S,4R,6S)-4-acetoxy-1-(2'-benzyloxycarbonylamino-3'-tert-butyldiphenylsilyloxy-propyl)-6-hydroxy-2-cyclohexen-1-ol

(1R,2S,2'S,3S,4R,6S)-4-acetoxy-1-(2'-benzyloxycarbonylamino-3'-tert-butyldiphenylsilyloxy-propyl)-2,3-epoxy-6-hydroxy-2-cyclohexen-1-ol