title: [Synthesis of droloxifene citrate and its new bioactivity].
abstract: OBJECTIVE
  To investigate a feasible synthetic procedure of droloxifene and study on its new bioactivities.
  
  
  RESULTS
  Droloxifene was synthesized using methoxybenzene and phenylacetic acid as starting materials, via Friedel-Crafts acylation, alkylation, demethylation, etherification, Grignard addition, elimination-dehydration, conversing configuration and forming citrate, totally 8 steps, overall yield 14.7% (9.2%). By pharmacological test, droloxifene citrate shows two new bioactivities: (1) obvious effect on reversing the MDR of K562/A02 cells and modulating mdrl, GST pi and TopoII alpha expression. (2) inducing apoptosis in cultured rat luteal cell.
  
  
  CONCLUSIONS
  The improved synthetic procedure is shorter than the reported method by two steps and has advantages of simple separation, purification and conversion of configuration; easily available starting materials and reagents; concise operation. Two new bioactivities on reversing MDR and inducing apoptosis of luteal cell offered a clue in new drugs research and widened clinic application of droloxifene.
authors.affiliation: Department of Organic Chemistry, School of Pharmacy, Shanghai Medical University, Shanghai 200032, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: P
authors.initials: P
authors.lastname: Xia
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: Y H
authors.initials: YH
authors.lastname: Zheng
authors.forename: Y
authors.initials: Y
authors.lastname: Xia
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Yang
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D017209:Apoptosis; D004317:Doxorubicin / Q000494:pharmacology; D018432:Drug Resistance, Multiple; D019008:Drug Resistance, Neoplasm; D005260:Female; D015870:Gene Expression; D019450:Genes, MDR; D006801:Humans; D020014:K562 Cells; D008184:Luteal Cells / Q000166:cytology / Q000187:drug effects*; D051381:Rats; D013629:Tamoxifen / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000494:pharmacology; D013678:Technology, Pharmaceutical
chemical_list: D000970:Antineoplastic Agents; D013629:Tamoxifen; C038345:droloxifene; D004317:Doxorubicin