Mini-Reviews in Medicinal Chemistry

ISSN: 1389-5575

Mini-Reviews in Medicinal Chemistry
Volume 9, Number 3, March 2009


Contents



Linear Naphtho-γ-Pyrones: A Naturally Occurring Scaffold of Biological Importance
Pp. 273-292
R.A. Barrow and M.W.B. McCulloch
[Abstract] [Purchase Article] [PMID: 19275720 PubMed - indexed for MEDLINE]


Antimicrobial, In Vitro and In Vivo Antineoplastic Activities, Mechanism of Action, Structural and Thermal Properties of a Small-Novel Pharmaceutical Organometallic Chelate Pp. 293-299
Kareem I. Batarseh
[Abstract] [Purchase Article] [PMID: 19275721 PubMed - indexed for MEDLINE]


Screening of Dipeptides Having Central Functions for Excitation and Sedation Pp. 300-305
H. Yamane, D.M. Denbow and M. Furuse
[Abstract] [Purchase Article] [PMID: 19275722 PubMed - indexed for MEDLINE]


New Insight in LPS Antagonist Pp. 306-317
A. Ianaro, M. Tersigni and F. D’Acquisto
[Abstract] [Purchase Article] [PMID: 19275723 PubMed - indexed for MEDLINE]


The Role of WNT in Rheumatoid Arthritis and its Therapeutic Implication Pp. 318-323
Kazushi Imai, Tadashige Chiba, Genta Maeda and Masako Morikawa
[Abstract] [Purchase Article] [PMID: 19275724 PubMed - indexed for MEDLINE]


Future Targets in Endometriosis Treatment: Targeting the Endometriotic Implant Pp. 324-328
Warren B. Nothnick and Xuan Zhang
[Abstract] [Purchase Article] [PMID: 19275725 PubMed - indexed for MEDLINE]


Oligomerization of the Heptahelical G Protein Coupling Receptors: A Case for Association Using Transmembrane Helices Pp. 329-339
M.S. Parker, R. Sah, E.A. Park, T. Sweatman, A. Balasubramaniam, F.R. Sallee and S.L. Parker
[Abstract] [Purchase Article] [PMID: 19275726 PubMed - indexed for MEDLINE]


Microwave Assisted Synthesis: A New Technology in Drug Discovery Pp. 340-358
V. Santagada, F. Frecentese, E. Perissutti, F. Fiorino, B. Severino and G. Caliendo
[Abstract] [Purchase Article] [PMID: 19275727 PubMed - indexed for MEDLINE]


Novel Perspectives in Celiac Disease Therapy Pp. 359-367
Yolanda Sanz
[Abstract] [Purchase Article] [PMID: 19275728 PubMed - indexed for MEDLINE]


Lysophospholipids: Their Generation, Physiological Role and Detection. Are They Important Disease Markers? Pp. 368-378
Beate Fuchs and Jürgen Schiller
[Abstract] [Purchase Article] [PMID: 19275729 PubMed - indexed for MEDLINE]


Role of the HIV-1 Positive Elongation Factor P-TEFb and Inhibitors Thereof Pp. 379-385
Yan Wang, Xin-yong Liu and Erik De Clercq
[Abstract] [Purchase Article] [PMID: 19275730 PubMed - indexed for MEDLINE]


Physiological and Pathophysiological Functions of SIRT1 Pp. 386-394
M. Wojcik, K. Mac-Marcjanek and L.A. Wozniak
[Abstract] [Purchase Article] [PMID: 19275731 PubMed - indexed for MEDLINE]


New Approaches to Target the Androgen Receptor and STAT3 for Prostate Cancer Treatments Pp. 395-400
Meilan He and Charles Y.F. Young
[Abstract] [Purchase Article] [PMID: 19275732 PubMed - indexed for MEDLINE]




Abstracts



[Back to top] [Purchase Article] [PMID: 19275720 PubMed - indexed for MEDLINE]
Linear Naphtho-γ-Pyrones: A Naturally Occurring Scaffold of Biological Importance

R.A. Barrow and M.W.B. McCulloch

The linear naphtho-γ-pyrone (LNGP) moiety is a naturally occurring scaffold with broad biological activity ranging through antimicrobial, antiviral, insecticidal and anti-estrogenic activity. This review, the first of its kind, surveys the chemical literature in an effort directed toward assembling data that will facilitate the construction of activity profiles associated with this emerging class of compounds. The structural and associated biological information has been presented in tabular format with all structures revealed throughout the document and referencing that will allow the reader to rapidly access the literature pertaining to a specific activity or structural class.


[Back to top] [Purchase Article] [PMID: 19275721 PubMed - indexed for MEDLINE]
Antimicrobial, In Vitro and In Vivo Antineoplastic Activities, Mechanism of Action, Structural and Thermal Properties of a Small-Novel Pharmaceutical Organometallic Chelate

Kareem I. Batarseh

The antimicrobial, the in vitro and in vivo antineoplastic activities, mechanism of action, the structural and thermal properties of a pharmaceutically novel and small organometallic silver (I)-tartaric acid complex synthesized by the author given the title name Aliargentumycine or AAgM are reviewed here.


[Back to top]
[Purchase Article] [PMID: 19275722 PubMed - indexed for MEDLINE]
Screening of Dipeptides Having Central Functions for Excitation and Sedation

H. Yamane, D.M. Denbow and M. Furuse

:The naturally-occurring dipeptide carnosine (β-alanyl-L-histidine) and the tripeptide glutathione (L-γglutamyl-L-cysteinylglycine) are found extensively in animal tissues such as brain and skeletal muscle. Central functions for excitation and sedation of them and their derivatives were screened.


[Back to top]
[Purchase Article] [PMID: 19275723 PubMed - indexed for MEDLINE]
New Insight in LPS Antagonist

A. Ianaro, M. Tersigni and F. D’Acquisto

Lipopolysaccharide (LPS) or endotoxin, the major constituent of the outer membrane of Gram negative bacteria, has been implicated as the bacterial product responsible for the clinical syndrome of sepsis. LPS binding to the host receptor Toll-like receptor 4 (TLR4) triggers an inflammatory reaction characterised by the release of large number of inflammatory mediators that allow the host to respond to the invading pathogen. When this production becomes uncontrolled and excessive, it leads to the development of septic shock. Despite decades of efforts in supporting therapies, sepsis remains the leading cause of death amongst critically ill patients. Unfortunately, the major factor contributing to the high morbidity and mortality of sepsis is the lack of the effective targeted treatment. Indeed, over 30 drugs for the treatment of sepsis have been developed: many of these target specific inflammatory mediators and have thus been, in general, unsuccessful since sepsis relies on the cross talk of several cytokines and the block of a single factor has been proven to be ineffective. More successful strategies include those modulating the early phase of LPS signalling such as the ones that prevent the binding of LPS to host cells and the subsequent cascade of detrimental events. In this light, effective LPS an-tagonists would represent invaluable tools to efficaciously manage sepsis. This review discusses the evolution of naturally occurring and synthetic LPS antagonists with emphasis on the development of several natural new molecules.


[Back to top]
[Purchase Article] [PMID: 19275724 PubMed - indexed for MEDLINE]
The Role of WNT in Rheumatoid Arthritis and its Therapeutic Implication

Kazushi Imai, Tadashige Chiba, Genta Maeda and Masako Morikawa

Rheumatoid arthritis (RA) is a systematic inflammatory and intractable disease, which progressively affects multiple joints. Recent findings strongly suggest a key role of WNT signaling in the disease initiation and progression. In this review, we discuss the role and possibility of treatment by targeting WNT signaling.


[Back to top] [Purchase Article] [PMID: 19275725 PubMed - indexed for MEDLINE]
Future Targets in Endometriosis Treatment: Targeting the Endometriotic Implant

Warren B. Nothnick and Xuan Zhang

Endometriosis is an enigmatic, debilitating disease which affects as many as 15% of all women of reproductive age and is characterized by pelvic pain and infertility. Current treatment regimes used to manage the disease do so by inducing a hypoestrogenic state. While the absence of circulating estrogen levels lead to a regression of the disease, this hypoestrogenism also induces many unpleasant side-effects. As such, these and other shortcomings of current drug therapies emphasize their limitations and the necessity for the development of novel endometriosis treatments. In this review, current therapies which target the biochemistry of the implant are discussed with emphasis on aromatase inhibitors, anti-angiogenic compounds and vascular-disrupting agents.


[Back to top] [Purchase Article] [PMID: 19275726 PubMed - indexed for MEDLINE]
Oligomerization of the Heptahelical G Protein Coupling Receptors: A Case for Association Using Transmembrane Helices

M.S. Parker, R. Sah, E.A. Park, T. Sweatman, A. Balasubramaniam, F.R. Sallee and S.L. Parker

The heptahelical G protein coupling receptors oligomerize extensively via transmembrane domains, in association with heterotrimeric G proteins. This provides higher affinity for agonists, conformational stability necessary for signal transduction, and protection from intracellular proteinases. The oligomerization is relevant to organismic pathophysiology and could be targeted by natural or modified agonists.


[Back to top] [Purchase Article] [PMID: 19275727 PubMed - indexed for MEDLINE]
Microwave Assisted Synthesis: A New Technology in Drug Discovery

V. Santagada, F. Frecentese, E. Perissutti, F. Fiorino, B. Severino and G. Caliendo

The interest in the microwave assisted organic synthesis has been growing during the recent years. It results from an increasing knowledge of fundamentals of the dielectric heating theory, availability of an equipment designed especially for the laboratory use as well as the discovery of the special techniques of the microwave syntheses. The efficiency of microwave flash-heating chemistry in dramatically reducing reaction times (reduced from days and hours to minutes and seconds) has recently been proven in several different fields of organic chemistry and this aspect is of great importance in high-speed combinatorial and medicinal chemistry. In this contribution, the current state of the art is summarized providing examples of the most recent applications in the field of microwave assisted synthesis of biologically active compounds both in heterocyclic and in peptide and peptidomimetic optimization.


[Back to top] [Purchase Article] [PMID: 19275728 PubMed - indexed for MEDLINE]
Novel Perspectives in Celiac Disease Therapy

Yolanda Sanz

Currently the only treatment for celiac disease is adherence to a strict gluten-free diet; however, compliance with this diet is complex and other alternatives are called for. Herein, we review recent developments in the design of novel therapeutic strategies to counteract the pathogenic effects of the interactions between gluten peptides and their specific biological targets.


[Back to top] [Purchase Article] [PMID: 19275729 PubMed - indexed for MEDLINE]
Lysophospholipids: Their Generation, Physiological Role and Detection. Are They Important Disease Markers?

Beate Fuchs and Jürgen Schiller

The concentration of lysophospholipids (LPL) increases under pathological conditions and, thus, LPL attract diagnostic and pharmacological interest. LPL are particularly interesting because they possess pro- and anti-inflammatory properties and can be generated by phospholipases and reactive oxygen species (ROS).

This review provides an overview of the mechanisms by which LPL are generated and how they can be determined. The effects of LPL as signaling molecules and their roles in different pathologies are discussed. The focus will be on lysophosphatidylcholine (LPC).


[Back to top] [Purchase Article] [PMID: 19275730 PubMed - indexed for MEDLINE]
Role of the HIV-1 Positive Elongation Factor P-TEFb and Inhibitors Thereof

Yan Wang, Xin-yong Liu and Erik De Clercq

Transcription is considered to be a crucial step in the replication cycle of HIV-1. Tat regulates an early step of transcription elongation. The positive elongation factor P-TEFb, a heterodimer containing a catalytic subunit (CDK9) and unique regulatory cyclins (CycT1), is required for HIV-1 Tat transcriptional activation. This is a potential target for new HIV-1 transcription inhibitors. Without P-TEFb, transactivation is restrained and only short transcripts are generated. All the P-TEFb inhibitors can suppress the HIV-1 transactivation process by inhibition of CycT1, CDK9 or their interaction. Several low-molecular-weight compounds such as flavopiridol, roscovitine and the human small nuclear RNA 7SK which have been showed to possess potent anti-HIV activity by interfering with P-TEFb functions are reviewed in this article.


[Back to top] [Purchase Article] [PMID: 19275731 PubMed - indexed for MEDLINE]
Physiological and Pathophysiological Functions of SIRT1
M. Wojcik, K. Mac-Marcjanek and L.A. Wozniak

The human SIRT1 is a nuclear enzyme from the class III histone deacetylases (HDACs) which is widely distributed in mammalian tissues. A variety of SIRT1 substrates hints that this protein is involved in the regulation of diverse biological processes, including cell survival, apoptosis, gluconeogenesis, adipogenesis, lipolysis, stress resistance, muscle differentiation, and insulin secretion. This review emphasizes catalytic properties of SIRT1 and its role in apoptosis, insulin pathway, and neuron survival.


[Back to top] [Purchase Article] [PMID: 19275732 PubMed - indexed for MEDLINE]
New Approaches to Target the Androgen Receptor and STAT3 for Prostate Cancer Treatments
Meilan He and Charles Y.F. Young

Prostate cancer (PCa) is a common cause of death in men and remains incurable in the androgen-refractory phase. Growing evidence has shown that the androgen receptor (AR) and signal transducers and activators of transcription 3 (STAT3) could be effective targets for androgen-refractory PCa therapy. Many strategies have been reported to inhibit the AR or STAT3 activities. In this review, we focus on the AR N-terminal domain and AR chaperones, as well as small molecule inhibitors to STAT3 with which we discuss some new approaches to target the AR and STAT3 as potential treatments for androgen-refractory PCa.



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