Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5214975 | Tetrahedron | 2015 | 6 Pages |
Abstract
We studied a modified Mitsunobu reaction for the direct conversion of alcohol to thioether, resulting in a high yield and requiring fewer steps. A facile method for synthesizing a novel GPR119 agonist, (R)-1,1,1-trifluoropropan-2-yl-6-(4-(((pyridin-2-ylmethyl)sulfonyl)methyl)phenyl)spiro[chromane-2,4â²-piperidine]-1â²-carboxylate (1), was established starting from the key intermediate alcohol 3 to pyridylmethylthioether 14 by using PPh3(OCH2CF3)2 without protection of the piperidine moiety, resulting in an excellent yield. Finally, the efficient oxidation of the sulfide and carbamoylation of the piperidine moiety afforded the desired product 1.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Tomoaki Koshizawa, Yukiyoshi Yamazaki, Tadaaki Ohgiya, Kimiyuki Shibuya,