title: [Synthesis and antitumor activity of 4-(2-amido-2-ethoxycarbonyl) ethylsulfenyl-4-deoxy-4'-demethylepipodophyllotoxin analogues].
abstract: Twenty three 4-(2-amido-2-ethoxycarbonyl) ethylsulfenyl-4-deoxy-4'-demethylepipodophyllotoxin analogues were synthesized by three steps, in which trifluoroacetic acid was used as a condensation agent of 4'-demethylepipodophyllotoxin with L-cysteine ethyl ester hydrochloride without any protection of phenolic hydroxy and amino groups. All compounds were screened in vitro against L1210 leukemia and KB cells, in which, compounds 11, 16 and 18 exhibited more potent antitumor activity than etoposide.
authors.affiliation: Shanghai Institute of Pharmaceutical Industry.
authors.forename: S F
authors.initials: SF
authors.lastname: Yin
authors.forename: W Y
authors.initials: WY
authors.lastname: Ma
authors.forename: T D
authors.initials: TD
authors.lastname: Wang
authors.forename: X H
authors.initials: XH
authors.lastname: Chen
authors.forename: C N
authors.initials: CN
authors.lastname: Zhang
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D006801:Humans; D007624:KB Cells / Q000187:drug effects; D007939:Leukemia L1210 / Q000473:pathology; D011034:Podophyllotoxin / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000494:pharmacology; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000970:Antineoplastic Agents; D011034:Podophyllotoxin