CC BY 4.0 · Synthesis 2020; 52(02): 159-188
DOI: 10.1055/s-0039-1690688
review
Copyright with the author(s) (2019) The author(s)

Isothiazoles in the Design and Synthesis of Biologically Active Substances and Ligands for Metal Complexes

a   Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow 117198, Russian Federation   Email: avkletskov@gmail.com
,
Nikolay A. Bumagin
b   M.V. Lomonosov Moscow State University, Leninskii Gory, 1/3, Moscow 119991, Russian Federation   Email: bna51@mail.ru
,
a   Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow 117198, Russian Federation   Email: avkletskov@gmail.com
,
Dmitry G. Grudinin
a   Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow 117198, Russian Federation   Email: avkletskov@gmail.com
,
Vladimir I. Potkin
c   Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, Surganova Str., 13, 220072, Minsk, Belarus   Email: potkin@ifoch.bas-net.by
› Author Affiliations
The publication has been prepared with the support of the "RUDN University Program 5-100".
Further Information

Publication History

Received: 21 July 2019

Accepted after revision: 09 September 2019

Publication Date:
17 October 2019 (online)


Abstract

The chemistry of isothiazoles is being intensively developed, which is evidenced by the wide range of selective transformations involving the isothiazole heterocycle and the high biological activity of its derivatives that can be used as effective new drugs and plant protection chemicals. Some representatives of isothiazoles have proven to be synergists of bioactive substances, which opens the way to lower the doses of drugs used and is especially important in cancer chemotherapy. In the framework of the present review, the accomplishments in the chemistry of isothiazoles over the past 18 years are examined, whilst current strategies for the synthesis of isothiazole-containing molecules and key directions of studies in this field of heterocyclic chemistry are discussed. Considerable attention is paid to chlorinated isothiazoles and strategies for their use in the synthesis of biologically active substances. In addition, a comprehensive review of existing literature in the field of metal complexes of isothiazoles is given, including the results and prospects for the practical use of isothiazole–metal complexes as catalysts for cross-coupling reactions in aqueous and aqueous–alcoholic media (‘green chemistry’).

1 Introduction

2 Synthesis by Ring-Forming Reactions

2.1 Intramolecular Cyclization

2.2 (4+1)-Heterocyclization

2.3 (3+2)-Heterocyclization

2.4 Syntheses by Ring Transformations

3 Isothiazoles by Ring Functionalization Reactions: Nucleophilic Substitution, Cross-Coupling and Side-Chain Functionalization

4 Selected Syntheses of Biologically Active Isothiazole Derivatives

5 Isothiazoles in the Synthesis of Transition-Metal Complexes and in Metal-Complex Catalysis

6 Conclusion