Novel aryl piperazines for alleviation of 'andropause' associated prostatic disorders and depression

Eur J Med Chem. 2017 May 26:132:204-218. doi: 10.1016/j.ejmech.2017.03.036.

Sonal Gupta ¹, Deepti Pandey ², Dhanaraju Mandalapu ³, Vikas Sharma ², Mahendra Shukla ⁴, Seema Singh ⁵, Nidhi Singh ⁶, Santosh Kumar Yadav ², Dilip Kumar Tanpula ⁷, Surabhi Singh ⁸, Jagdamba P Maikhuri ², Shubha Shukla ⁵, Jawahar Lal ⁴, Mohammad I Siddiqi ⁶, Gopal Gupta ⁹, Vishnu L Sharma ¹⁰

Affiliations

1 Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
2 Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
3 Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
4 Pharmacokinetics and Metabolism Division, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
5 Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
6 Molecular & Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
7 Pharmacokinetics and Metabolism Division, CSIR-Central Drug Research Institute, Lucknow 226031, India; Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli 229010, India.
8 Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India; Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli 229010, India.
9 Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
10 Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India. Electronic address: vl_sharma@cdri.res.in.

PMID: 28363155 DOI: 10.1016/j.ejmech.2017.03.036

Abstract

A series of seventeen piperazine derivatives have been synthesized and biologically evaluated for the management of andropause-associated prostatic disorders and depression. Five compounds 16, 19, 20, 21 and 22 significantly inhibited proliferation of androgen-sensitive LNCaP prostatic cell line with EC₅₀ values of 12.4 μM, 15.6 μM, 11.8 μM, 10.4 μM, 12.2 μM respectively and decreased CA²⁺ entry through adrenergic-receptor α_1A blocking activity. Anti-androgenic behaviour of compound 19 and 22 was evident by decreased luciferase activity. The high EC₅₀ value in AR-negative cells PC3 and DU145 suggested that the cytotoxicity of compounds was due to AR down regulation. Compound 19 reduced the prostate weight of rats by 53.8%. Further, forced-swimming and tail-suspension tests revealed antidepressant-like activity of compound 19, lacking effects on neuromuscular co-ordination. In silico ADMET predictions revealed that the compound 19 had good oral absorption, aqueous solubility, non-hepatotoxic and good affinity for plasma protein binding. Pharmacokinetic and tissue uptake of 19 at 10 mg/kg demonstrated an oral bioavailability of 35.4%. In silico docking studies predicted similar binding pattern of compound 19 on Androgen Receptor as hydroxyflutamide. Compound 19 appears to be a unique scaffold with promising activities against androgen associated prostatic disorders in males like prostate Cancer and BPH and associated depression.

Keywords

MTT assay; Pharmacokinetics; Piperazine derivatives; α(1A) blocking activity.

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