A group of chemists, spearheaded by Andrei Malkov at Loughborough University in the UK, has created a novel total synthesis of (+)-colchicine that highlights how green chemistry practices are evolving into standard techniques for constructing intricate molecules. Although this method involves slightly more steps and yields lower returns than previously documented approaches, it utilizes electrochemistry and other eco-friendly techniques, steering clear of hazardous substances and transition metals.<\/p>\n
Colchicine, a notoriously difficult and traditional target for total synthesis because of its unique six-seven-seven ring structure and stereochemistry, has significant biological activity. Traditionally employed to manage gout and familial Mediterranean fever, colchicine derivatives are also being explored as possible cancer treatments.<\/p>\n
In recent times, chemists have increasingly adopted electrochemistry for creating carbon-carbon, carbon-oxygen, and carbon-nitrogen bonds. Initially, electrochemistry served as a solution for particular challenges in total synthesis, but the new colchicine synthesis integrates it as a central element of the method.<\/p>\n
The eight-step synthesis formulated by Malkov and colleagues comprises four transformations mediated by electrochemistry: the reduction of a double bond, oxidative deprotection of an amine group, intramolecular coupling that constructs a seven-membered ring, and a de-aromatisation step. Furthermore, it incorporates a mechanochemical aldol condensation that is solvent-free and an organocatalytic reductive amination.<\/p>\n
Malkov states that the objective was to devise a more environmentally friendly synthesis for colchicine by substituting toxic and aggressive stoichiometric oxidants with electrochemical processes and eliminating transition metals, which face strict regulations in the pharmaceutical industry. The utilization of mechanochemistry in the preliminary step also enables solvent-free scaling and enhances the efficiency of the synthesis.<\/p>\n
Bhisma Patel, a specialist in electro-organic synthesis at IIT Guwahati, remarks on the promise of electrochemical and mechanochemical transformations in providing greener alternatives to conventional methods. William Chain at the University of Delaware emphasizes the benefits of electrochemical transformations in minimizing waste and energy demands while simplifying execution.<\/p>\n
Malkov frames this research within the larger trend of employing electrochemistry not merely as a niche curiosity but as a viable strategy for addressing synthetic challenges. Electrochemistry is increasingly favored by synthetic chemists owing to its environmental advantages, greater availability of equipment, and straightforward application in retrosynthetic analysis.<\/p>\n","protected":false},"excerpt":{"rendered":"
A group of chemists, spearheaded by Andrei Malkov at Loughborough University in the UK, has created a novel total synthesis of (+)-colchicine that highlights how green chemistry practices are evolving into standard techniques for constructing intricate molecules. Although this method involves slightly more steps and yields lower returns than previously documented approaches, it utilizes electrochemistry […]<\/p>\n","protected":false},"author":2,"featured_media":376406,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174],"class_list":["post-376405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-source-chemistryworld-com"],"_links":{"self":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts\/376405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=376405"}],"version-history":[{"count":0,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts\/376405\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/media\/376406"}],"wp:attachment":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=376405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=376405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=376405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}