6-Epipurpurosamine B 99239-15-3 Methyl 2,6-bis(benzyloxycarbonylamino)-2,3,4,6,7-pentadeoxy-beta-lyxo-heptopyranoside beta-L-lyxo-Heptopyranoside, methyl 2,3,4,6,7-pentadeoxy-2,6-bis(((phenylmethoxy)carbonyl)amino)-