title: Maytansinoids. Synthesis of a fragment of known absolute configuration involving chiral centers C-6 and C-7.
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D009904:Optical Rotation; D010078:Oxazines / Q000138:chemical synthesis*; D013237:Stereoisomerism
chemical_list: D000970:Antineoplastic Agents; D010078:Oxazines