2012
DOI: 10.1021/op300139g
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An Asymmetric Synthesis of a Chiral Sulfone Acid with Concomitant Hydrolysis and Oxidation to Enable the Preparation of a Glucokinase Activator

Abstract: This contribution describes the demonstration of an asymmetric synthesis of a glucokinase activator via protonation of the enolate generated from an alkylaryl ketene and (R)-pantolactone. Additionally, a one-pot hydrolysis/oxidation protocol with lithium hydroperoxide was developed to afford a chiral sulfone acid without degradation of the labile stereocenter.

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Cited by 12 publications
(2 citation statements)
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“…Although heterocycles devoid of chiral centers can be effective therapeutics (e.g., tyrosine kinase inhibitors), the selective disruption of more complex interactions (e.g., protein–protein interactions) have increased attention on the expansion and tailoring of molecular space, leading to drug candidates with complex structures containing several chiral centers . Chiral auxiliaries, kinetic resolution, and hydrogenation methods are well-established in industrial settings and continue to be successfully applied to the large scale preparations of APIs. However, ever more complex targets drive the invention and development of approaches outside of the conventional paradigm, and novel methodologies must answer emerging challenges as they appear. Contemporary enzymatic approaches have risen to meet this demand in recent years .…”
Section: Introductionmentioning
confidence: 99%
“…Although heterocycles devoid of chiral centers can be effective therapeutics (e.g., tyrosine kinase inhibitors), the selective disruption of more complex interactions (e.g., protein–protein interactions) have increased attention on the expansion and tailoring of molecular space, leading to drug candidates with complex structures containing several chiral centers . Chiral auxiliaries, kinetic resolution, and hydrogenation methods are well-established in industrial settings and continue to be successfully applied to the large scale preparations of APIs. However, ever more complex targets drive the invention and development of approaches outside of the conventional paradigm, and novel methodologies must answer emerging challenges as they appear. Contemporary enzymatic approaches have risen to meet this demand in recent years .…”
Section: Introductionmentioning
confidence: 99%
“…A Wittig reakció népszerűségét mutatja a napjainkban is megjelenő publikációk nagy száma. [58], [59], [60], [61], [62], [63], [64], [65], [66] Mindenképpen érdemes azonban megje- [69], [70], [71] Savas vagy bázikus funkciós csoportot tartalmazó olefinek esetében sóképzés [72] és/vagy pH változtatással járó extrakció alkalmazható a termék tisztítására. [73], [74], [75], [76], [77] Néhány esetben a Wittig reakció után a nyersterméket tisztítás nélkül alakítják tovább, majd egy későbbi lépésben, mikor a termék könnyebben elválasztható a foszfin-oxidtól végzik el a tisztítást.…”
Section: áBra a Wittig Reakció Mechanizmusaunclassified