Novel rearrangement of a 10-membered schiff base macrocycle to a tricyclic product: Crystal structures of the tricycle and a related macrocycle
作者:Louisa G. Wrench、William Clegg、Mark R.J. Elsegood、Harjit K. Gill、Lynne Horsburgh、Joyce C. Lockhart
DOI:10.1016/s0040-4039(00)61428-4
日期:1993.12
A Schiff base disulphide macrocyclic intermediate for the preparation of bis(aminoethanethiol) (BAT) ligands 1 rearranged to a tricyclic compound, whose structure was demonstrated by X-ray determination. It was found to be in equilibrium with the precursor Schiff base in solution.
Synthesis of β-CIT-BAT, a potential technetium-99m imaging ligand for dopamine transporter
作者:Gilles Tamagnan、Yigong Gao、Ronald M. Baldwin、Sami S. Zoghbi、John L. Neumeyer
DOI:10.1016/0040-4039(96)00826-x
日期:1996.6
The synthesis of an N2S2 conjugated BAT phenyltropane ligand is described. This agent can be further used to incorporate technetium-99m to form a neutral complex for SPECT imaging of the dopamine transporter. Copyright (C) 1996 Elsevier Science Ltd.
A Potential Melanoma Tracer: Synthesis, Radiolabeling, and Biodistribution in Mice of a New Nitridotechnetium Bis(aminothiol) Derivative Pharmacomodulated by a <i>N</i>-(Diethylaminoethyl)benzamide
Radioiodobenzamides are the best-known agents under study for the diagnosis of cutaneous melanoma and its metastases. We report the synthesis of a new BAT derivative radiopharmaceutical in which radioiodine is replaced by 99m-technetium. The cyclic intermediary methyl 4-[3-(4,4,7,7-tetramethyl-5,6-dithia-2,9-diazacyclodecyl)-2-oxapropyl]benzoate (5) occurred in two different conformations identified by spectroscopic analysis. The final BAT ligand was radiolabeled using the nitridotechnetium core by a ligand-exchange reaction. Two different complexes mere purified. After macroscopic gs-technetium synthesis, syn and anti isomers were identified. The global radiochemical yield was over 80%. The biodistribution of these two complexes was evaluated in mice bearing murine B16 melanoma. Extensive liver and kidney uptake was observed, but the benzamide tropism for the tumor was partially preserved.
Transannular cyclizations of 1,2-dithia-5,8-diazacyclodeca-4,8-dienes during borohydride reduction
作者:Alummoottil V. Joshua、John R. Scott、Sham M. Sondhi、Richard G. Ball、J. William Lown
DOI:10.1021/jo00388a020
日期:1987.6
KUNG, H. F.;YU, C. C.;BILLINGS, J.;MOLNAR, M.;BLAU, M., J. MED. CHEM., 1985, 28, N 9, 1280-1284
作者:KUNG, H. F.、YU, C. C.、BILLINGS, J.、MOLNAR, M.、BLAU, M.