(5RS)-2-O-acetyl-3-O-benzoyl-5-C-(tert-butylthio)-1,5-thioanhydro-β-DL-xylofuranose

tert-butyl 2,3-di-O-acetyl-1-thio-DL-xylo-pentodialdo-1,4-furanoside 5-(di-tert-butyl dithioacetal)

(5RS)-2,3-di-O-benzoyl-5-C-(tert-butylthio)-1,5-thioanhydro-β-DL-xylofuranose