More

Blog

Dr. Oleksandr Grygorenko shares his time as Principal Scientist at Enamine Ltd. and Associate Professor (Docent) at National Taras Shevchenko University of Kyiv.

His blog posts are mostly related to organic and medicinal chemistry.

Macro Space: the REAL Space of macrocycles

Macro_Space

As I already wrote in my previous post, we at Enamine are constantly working on extending our REAL concept (where REAL is for REadily AccessibLe compounds). Basically, this concept allows for the generation of a virtual chemical space based on the experimentally validated synthetic accessibility. Until now the REAL Space has comprised 15.5 billion make-on-demand molecules and is currently the largest offer of commercially available compounds. It was shown that this chemical space is especially useful in combination with high-throughput virtual screening techniques (see Nature 2019, 566, 224–229 and Nature 2020, 580, 663–668); there is also a number of other ways to access it.

Continue reading
279 Hits
0 Comments

REAL Space rapidly expands

blog_REA_20201106-121014_1

More than a decade ago, we have launched an in-house project on the generation of a virtual compound database based on the experimentally validated synthetic accessibility (the so-called REAL Database, where REAL is for REadily AccessibLe). Further extension of this concept led to the development of REAL Space, a searchable chemical space that is not typically stored as an enumerated database but generated upon query through chemoinformatics software. Until now the largest REAL Space has comprised 15.5 billion make-on-demand molecules and is currently the largest offer of commercially available compounds. Recently, utility of the REAL methodology was confirmed by discovery of highly potent AmpC β-lactamase inhibitors, D4 dopamine receptor ligands, and Kelch-like ECH-associated protein 1 (KEAP1) inhibitors published in Nature (see Nature 2019, 566, 224–229 and Nature 2020, 580, 663–668).

Continue reading
341 Hits
0 Comments

A housane that our chemists built

Housane-News

A diastereoselective approach to cis- and trans-1,3-disubstituted bicyclo[2.1.0]pentanes (housanes) was recently reported by our chemists in The Journal of Organic Chemistry. The article included preparation of 35 derivatives on up to 100 g scale. Moreover, pKa’s and conformational features of selected examples of housanes (e.g. GABA analogues) were also studied and compared to that of the corresponding 1,3-disubstituted cyclopentanes. For an extended list of novel housanes check the Enamine Store page.

1420 Hits
0 Comments

Paper by Enamine chemists is featured on the JOC cover

JOC_cover_20200120

In a recent JOC paper, Enamine chemists reported a comprehensive study of regioselective [3 + 2] cycloaddition reactions – an efficient approach towards 3,5-disubstituted isoxazole building blocks bearing mono-, di- or trifluoromethyl substituents. More than 100 derivatives were obtained on up to 130 g scale, and multigram quantities of representative examples are available from EnamineStore at the isoxazole library.

1252 Hits
0 Comments

Introducing alkyl substituent into the piperidine core goes multigram

piperidine_2020

Enamine’s EurJOC paper on the scalable and regioselective preparation of all isomeric (cyclo)alkyl piperidines and the corresponding amino alcohols was featured on the cover of the issue. The multigram quantities of these derivatives are available from EnamineStore at the piperidine library

 

1308 Hits
0 Comments

A New Paper by Enamine’s Scientists: "Synthesis and chemical transformations of diazolyl α,α-difluoroacetates"

Blog_20191217

Recent Enamine’s paper disclosed novel heteroaryl difluoroacetates and the corresponding carboxylic acids, amides, nitriles and alcohols as promising building block in drug design. Known literature example of metabolism-directed optimization of 3-aminopyrazinone acetamide thrombin inhibitor 1 led to the the corresponding 2,2-difluoro-2-pyridin-2-yl derivative 2, which is not prone to metabolic oxidation at the α-methylene group next to the aromatic moiety.

1132 Hits
0 Comments

A New Review Paper by Enamine’s Scientists: "The Symbiotic Relationship Between Drug Discovery and Organic Chemistry”

The_symbiotic_relationship_between_drug_discovery_and_organic_chemistry

The review mentioned in the title was published in Chemistry – A European journal and emerged from a collaboration of scientists from Enamine Ltd. (including myself) and Duncan Judd from Awridian Ltd. Despite some “symbiotic” hype in the title (as it was pointed out by one of the reviewers), the paper provides a comprehensive overview of concepts which appeared at the edge of these disciplines recently. Initially, we have aimed at tutorial review that might help synthetic chemists to become familiar with state-of-the-art in the field. Thus, genesis of concepts like “…-oriented” syntheses (DOS, LOS, BIOS, FOS, DTS), as well as related “abbreviated” strategies (BBs, FBDD, DEL, REAL) has been discussed, together with recent advances focusing mainly on chemical aspects.

Continue reading
1927 Hits
0 Comments

New Building Blocks For Drug Discovery Are Getting Closer: Gem-difluorocyclopropane-derived Amines

Artwork by Web Design Studio "ZORELiT"

(This article originally appeared at Sciencetrends.com)

 

Modern drug discovery relies heavily on the ability of chemists to produce good starting points for producing high-quality lead compounds. Several concepts were established in the last two decades to aim synthetic organic chemistry onto the proper areas of chemical space, in particular, the so-called lead-oriented approach which describes paradigm shift towards low-molecular-weight, relatively hydrophilic, conformationally restricted, sp3-enriched structures.

Continue reading
1578 Hits
0 Comments

FOLLOW US

Contact us

I have read and agree with Privacy Policy of Enamine

Send me details