Synthesis and QSAR study of the anticancer activity of some novel indane carbocyclic nucleosides

A set of 14 indane carbocyclic nucleosides were synthesized and experimentally assayed for their inhibitory effects in the proliferation of murine leukemia (L1210/0) and human T-lymphocyte (Molt4/C8, CEM/0) cells. The compounds have promising inhibitory activity judging from the IC(50) values obtained for all these cellular lines. Multiple linear regression analysis was then applied to build up consistent QSAR models based on quantum mechanics-derived molecular descriptors. The derived models reproduce well the experimental data of both three cells (r(2) >/=0.90), display a good predictive power and are, above all, easily interpretable. They show that frontier-orbital energies and hydrophobicity are mainly responsible for the activity of the synthesized compounds and also, suggest similar mechanisms of action. The final QSAR-models involve only two descriptors: the lowest unoccupied molecular orbital energy and the solvent accessible-hydrophobic surface area, but describe a sound correlation between predicted and experimental activity data (r(2)=0.931, r(2)=0.936 and r(2)=0.931 for the cells L1210/0, Molt4/C8 and CEM/0, respectively).

New carbocyclic nucleosides derived from indan

Seven new carbocyclic nucleosides derived from indan (1a-g) were efficiently prepared from 1,2-indanedimethanol vía Mitsunobu reaction with 6-chloroadenine and subsequent introduction of the appropriate substituent.

Synthesis and antiviral activity of carbocyclic nucleosides incorporating a modified cyclopentane ring. Part 3: Adenosine and uridine analogues

Six new carbocyclic nucleosides were prepared by mounting a purine (compounds 4-6), 8-azapurine (7 and 8) or uridine (9) base on the amino group of (1S,3R)-3-amino-2,2,3-trimethylcyclopentylmethanol (10). At subtoxic concentrations, compounds 5-9 showed at best marginal antiviral activity.

Synthesis and antiviral and cytostatic activities of carbocyclic nucleosides incorporating a modified cyclobutane ring. Part 1: Guanosine analogues

Five new carbocyclic nucleosides were prepared by constructing a guanine (compounds 3, 5) or 8-azaguanine (compounds 4, 6, and 7) base on the amino group of (1'S,3'R)-3-(3'-amino-2',2'-dimethylcyclobutyl)propan-1-ol (8), and their activities against a variety of viruses and tumor cell lines were determined. Only compounds 3 and 7 showed a detectable activity at subtoxic concentrations against some viruses tested.

Synthesis and antiviral and antineoplastic activities of some novel carbocyclic guanosine analogues with a cyclobutane ring

Cyclobutyl nucleoside analogues containing guanine and 8-azaguanine (compounds 5-10) were prepared from (1R,cis)-3-aminomethyl-2,2-dimethylcyclobutylmethanol (1). All were evaluated as antiviral and antitumoral agents in a variety of assay systems. Compounds 6 and 7 showed a noteworthy activity against a respiratory syncytial virus and compound 10 was moderately active against vaccinia virus. Only compound 5 showed some cytostatic activity.

New hexahydrocarbazoles and spiro indoles, and their affinity for D2 dopamine and 5-HT2A serotonin receptors

In a search for novel atypical antipsychotics, the synthesis of new hexahydrocarbazoles and spiro indoles N-substituted with a 3-(dimethylamino)propyl chain is described, together with the results of an in vitro evaluation of their affinities for D2 and 5-HT2A receptors.

Synthesis, antiviral and cytostatic activities of carbocyclic nucleosides incorporating a modified cyclopentane ring. Part 2: Adenosine and uridine analogues

Six new carbocyclic nucleosides were prepared by mounting a purine (compounds 5-7), 8-azapurine (compounds 9 and 10) or pyrimidine (compound 13) base on the amino group of (1R,cis)-3-(aminomethyl)-1,2,2-trimethylcyclopentylmethanol (2). The antiviral activity of compounds 5-7, 10 and 13, and their cytostatic activity, were evaluated. At subtoxic concentrations, the compounds showed no or marginal antiviral activity. Compound 5 showed moderate inhibition on tumor cell proliferation.