title: Modified taxols, 9. Synthesis and biological evaluation of 7-substituted photoaffinity analogues of taxol.
abstract: The 7-substituted taxol analogues 7, 19, 27, and 32 have been prepared as potential photoaffinity-labeled derivatives for studies of the nature of the binding site of taxol on polymerized tubulin. The analogue 32 has been prepared in both deuterium- and tritium-labeled versions. Tubulin-assembly studies were carried out with these compounds, and it was found that they showed some but not all of the properties of taxol. We conclude that these specific taxol analogues labeled at the 7 position are not ideal derivatives for photoaffinity labeling studies.
authors.affiliation: Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg 24061-0212.
authors.forename: J M
authors.initials: JM
authors.lastname: Rimoldi
authors.forename: D G
authors.initials: DG
authors.lastname: Kingston
authors.forename: A G
authors.initials: AG
authors.lastname: Chaudhary
authors.forename: G
authors.initials: G
authors.lastname: Samaranayake
authors.forename: S
authors.initials: S
authors.lastname: Grover
authors.forename: E
authors.initials: E
authors.lastname: Hamel
mesh_terms: D000345:Affinity Labels / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D000478:Alkylation; D000818:Animals; D001923:Brain Chemistry; D002417:Cattle; D003460:Crystallization; D007553:Isotope Labeling; D017239:Paclitaxel / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology*; D010777:Photochemistry; D011485:Protein Binding; D014404:Tubulin / Q000737:chemistry
chemical_list: D000345:Affinity Labels; D014404:Tubulin; D017239:Paclitaxel