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Antitumor Agents. II : Regio- and Stereospecific Syntheses of 1-β-Alkyl-1-desoxypodophyllotoxin Derivatives and Biological Activity 寺田 忠史,武田 節夫, 山口 秀夫, 山田 雄次 Taiho Pharmaceutical Co., Ltd. Osaka University of Pharmaceutical Sciences 1993 https://t.co/tgo