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11 April 2024
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Cambridge, UK and Kyiv, Ukraine, 11 April 2024: Metrion Biosciences Limited (“Metrion”), the specialist ion channel and cardiac safety screening contract research organisation (CRO) and drug discovery company, and Enamine Ltd (“Enamine”), the global leader in supplying small molecules and early drug discovery services, announced that Metrion has enhanced its High Throughput Screening (HTS) services with the addition of access to Enamine’s compound libraries.
27 March 2024
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March, 2024, Kyiv, Ukraine. Enamine Ltd, the global leader in supplying small molecules and early drug discovery services, announces the expansion of its library synthesis capabilities with a focus on Enamine REAL compounds to further support the growing demands of agricultural and pharmaceutical companies, research institutes, and drug discovery centers.
01 March 2024
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We are excited to announce a strategic collaboration between Enamine, the world's leading provider of chemical building blocks, compound libraries, and biology services, and Genez International, a prominent enterprise with 15 years of experience in cross-border supply management, biopharmaceutical research and development, semiconductor equipment, and high-definition digital imaging systems.
ACS Omega
2019, 4 (4), 7498-7515
DOI:
10.1021/acsomega.9b00896
Melnykov K.; Artemenko A.; Ivanenko B.; Sokolenko Y.; Nosik P.; Ostapchuk E.; Grygorenko O.; Volochnyuk D.; Ryabukhin S.
Synthetic approaches toward multigram preparation of spirocyclic α,α-disubstituted pyrrolidines from readily available starting materials are discussed. It was shown that although a number of synthetic methodologies have been known to date, many of the title compounds remain hardly accessible. The most appropriate literature method (which relied on reaction of imines and allyl magnesium halide, followed by bromocyclization) was identified and optimized. It was found that the method is most fruitful for simple non-functionalized substrates. Two novel approaches based on the Sakurai or Petasis reactions of cyclic ketones, followed by hydroboration–oxidation at the allyl moiety thus introduced, were elaborated. The latter method had the largest scope and was beneficial for the substrates containing organosulfur or protected amino functions. For the synthesis of 4-azaspiro[2.4]heptane, an alternative synthetic scheme commencing from tert-butyl cyclopropanecarboxylate (instead of the corresponding ketone) was developed. It was shown that the whole set of the methodologies developed can be used for the synthesis of various spirocyclic α,α-disubstituted pyrrolidines—advanced building blocks of potential importance to medicinal and agrochemistry—at up to a 100 g scale.