D-CHNB2 HNO3 CH2OH CHOH < - NH2 CHch CHo CH -C-C-CH, 3 OH OH H2OCH2C—C-C CH 3CH2 NH2 HNO3 CH2 NH2 CH2 OH CH2 OH H2 O H + CH3 C CH3 OH C CH3 CH3 OH CH3 C CH3 CH3 C O CH3