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Microwave-Accelerated Synthesis of Protease Inhibitors

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Microwave Methods in Organic Synthesis

Part of the book series: Topics in Current Chemistry ((TOPCURRCHEM,volume 266))

Abstract

Controlled microwave heating has recently emerged as an enabling and productivity-enhancing tool for the medicinal chemist. With this superheating method, reaction times can often be reduced from days and hours down to minutes, and chemistry previously considered impractical or unattainable can be accessed. In this review, the search for new protease inhibitors using microwave-assisted small-scale organic transformations is presented, with a special focus on the development of inhibitors of the aspartic proteases plasmepsin I, plasmepsin II, and HIV-1 protease. A series of rapid lead-optimizations starting from transition-state mimicking core scaffolds using mainly microwave-accelerated, palladium-catalyzed coupling reactions are presented. Biological background and test results are summarized.

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Abbreviations

ADME:

Absorption, distribution, metabolism, excretion

AIDS:

Acquired immunodeficiency syndrome

Ala:

l-Alanine

APC:

Antigen-presenting cell

Asp:

l-Aspartic acid

AZT:

3′Azido-2′,3′-dideoxythymidine

Cat:

Cathepsin

CoMFA:

Comparative molecular field analysis

dba:

Dibenzylideneacetone

DME:

1,2-Dimethoxyethane

EC50 :

Inhibitor concentration that reduces the cytopathic effect of the virus by 50%

ED50 :

Inhibitor concentration at which 50% of a given cell system is inhibited

FDA:

US Food and Drug Administration

HAART:

Highly active antiretroviral therapy

HIV:

Human immunodeficiency virus

K i :

Inhibition constant

Leu:

l-Leucine

Met:

l-Methionine

MMP:

Matrix metalloproteinase

MW:

Microwaves

Phe:

l-Phenylalanine

Plm:

Plasmepsin

Pro:

l-Proline

SAR:

Structure–activity relationship

Tyr:

l-Tyrosine

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Acknowledgments

We gratefully acknowledge the Swedish Research Council (VR), the Swedish Foundation for Strategic Research (SSF), Medivir AB, Dr Jenny Ekegren, Dr Kristofer Olofsson and Mr Gunnar Wikman for valuable help and support.

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Correspondence to Mats Larhed .

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Mats Larhed Kristofer Olofssonq

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Wannberg, J., Ersmark, K., Larhed, M. (2006). Microwave-Accelerated Synthesis of Protease Inhibitors. In: Larhed, M., Olofssonq, K. (eds) Microwave Methods in Organic Synthesis. Topics in Current Chemistry, vol 266. Springer, Berlin, Heidelberg . https://doi.org/10.1007/128_067

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