Design, synthesis and cytotoxicity of 7-deoxy aryl discodermolide analogues
摘要:
A series of 7-deoxy discodermolide analogues in which the lactone fragment 'C' was replaced by aryl substituents were designed, synthesized, and evaluated for cytotoxicity. (C) 2004 Elsevier Ltd. All rights reserved.
Design, synthesis and cytotoxicity of 7-deoxy aryl discodermolide analogues
摘要:
A series of 7-deoxy discodermolide analogues in which the lactone fragment 'C' was replaced by aryl substituents were designed, synthesized, and evaluated for cytotoxicity. (C) 2004 Elsevier Ltd. All rights reserved.
intramolecular allylation reactions of furan and thiophene were performed using a cationic cyclopentadienyl-ruthenium (CpRu) complex of a chiral pyridine carboxylic acid, namely Cl-Naph-PyCOOH. Both furan and thiophene tethered with an allylic alcohol gave the corresponding bicyclic compounds in high yields and enantioselectivities using 0.1–5 mol% of the catalyst. The reaction was found to proceed via
The synthesis of spiropyrans 11 and 12 and spirooxazines 13–17 containing a thiophene moiety is described. Two different synthetic approaches were used. The spectrokinetic properties of these new compounds are reported.
The strategy of synthesis of new thiophene-substituted spiroheterocyclic photochromic structures, in spiropyran or spirooxazine series is described, The polymerization of thiophene entity give interesting semi-conductor systems. Such molecular materials prevent the reproduction of documents and could be useful in other applications such as fast optical switches.