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Kopach ME, Heath PC, Scherer RB, Pietz MA, Astleford BA, McCauley MK, Singh UK, Wong SW, Coppert DM, Kerr MS, Houghton PG, Rhodes GA, Tharp GA. Practical Asymmetric Synthesis of an Edivoxetine·HCl Intermediate via an Efficient Diazotization Process. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael E. Kopach
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Perry C. Heath
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Roger B. Scherer
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Mark A. Pietz
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Bret A. Astleford
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Mary Kay McCauley
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Utpal K Singh
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Sze Wing Wong
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - David M. Coppert
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Mark S. Kerr
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Peter G. Houghton
- Small Molecule Design and
Development, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Gary A. Rhodes
- Technical Services & Manufacturing Science, Elanco External Manufacturing & Commercialization, Greenfield, Indiana 46140, United States
| | - Gregg A. Tharp
- Manufacturing Technical Services, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
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2
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Morris WJ, Muppalla KK, Cowden C, Ball RG. Stereoselective Addition of 2-Phenyloxazol-4-yl Trifluoromethanesulfonate to N-Sulfinyl Imines: Application to the Synthesis of the HCV Protease Inhibitor Boceprevir. J Org Chem 2012; 78:706-10. [DOI: 10.1021/jo301856f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- William J. Morris
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
| | - Kiran K. Muppalla
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
| | - Cameron Cowden
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
| | - Richard G. Ball
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
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3
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A short enantioselective synthesis of (−)-bestatin via l-proline-catalyzed α-amination of an aldehyde. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Laurent M, Cérésiat M, Marchand-Brynaert J. Synthesis of (1′R,3S,4S)-3-[1′-(tert-Butyldimethylsilyloxy)ethyl]- 4-(cyclopropylcarbonyloxy)azetidin-2-one. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600235] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Kudyba I, Raczko J, Jurczak J. Asymmetric nitroaldol reaction. Synthesis of taxotere side chain and (-)-bestatin using (1R)-8-phenylmenthyl glyoxylate. J Org Chem 2004; 69:2844-50. [PMID: 15074936 DOI: 10.1021/jo0358269] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The nitroaldol reaction of (1R)-8-phenylmenthyl glyoxylate (3b) with 1-nitro-1-phenylmethane (4) or with 1-nitro-2-phenylethane (13) led stereoselectively to adducts syn-2b and syn-12b, which were then transformed into the Taxotere side chain and (-)-bestatin hydrochloride in overall yields of 52% and 31%, respectively.
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Affiliation(s)
- Iwona Kudyba
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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6
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Panunzio M, Bongini A, Monari M, Tamanini E, Bandini E. Convergent synthesis of cis-α,β-epoxy-carboxylic acids from 1-halo-2-trimethylsilyloxy-3-aza-4-phenyl-1,3-butadiene. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Kuznetsova L, Ungureanu IM, Pepe A, Zanardi I, Wu X, Ojima I. Trifluoromethyl- and difluoromethyl-β-lactams as useful building blocks for the synthesis of fluorinated amino acids, dipeptides, and fluoro-taxoids. J Fluor Chem 2004. [DOI: 10.1016/j.jfluchem.2003.12.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Synthesis of (−)-bestatin and the Taxotere® side-chain via nitroaldol reaction of (1R)-8-phenylmenthyl glyoxylate. Tetrahedron Lett 2003. [DOI: 10.1016/j.tetlet.2003.09.154] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Aoyagi Y, Jain RP, Williams RM. Stereocontrolled asymmetric synthesis of alpha-hydroxy-beta-amino acids. A stereodivergent approach. J Am Chem Soc 2001; 123:3472-7. [PMID: 11472118 DOI: 10.1021/ja0042332] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The stereocontrolled asymmetric synthesis of alpha-hydroxy-beta-amino acids has been investigated via the Lewis acid-promoted cyanation of (5R,6S)-2-acetoxy-4-(benzyloxycarbonyl)-5,6-diphenyl-2,3,5,6-tetrahydro-4H-1,4-oxazines with trimethylsilyl cyanide. Base-catalyzed hydrolysis of the resulting cyano compounds proceeds with excellent stereoselectivity, providing access to diastereomerically pure oxazine-2-carboxylic acids which were readily converted to each enantiomer of the alpha-hydroxy-beta-amino acids isothreonine and nor-C-statine.
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Affiliation(s)
- Y Aoyagi
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
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10
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Demillequand M, Cérésiat M, Belmans M, Kemps L, Marchand-Brynaert J. Analytical separation of the four stereoisomers of isopropyl 2,3-epoxybutanoate by gas chromatography. J Chromatogr A 1999. [DOI: 10.1016/s0021-9673(98)00951-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Lanier M, Le Blanc M, Pastor R. Nucleophilic ring opening of 3-F-alkyl 2,3-epoxypropanoates. Access to α,β-difunctional β-F-alkylpropanoates. Tetrahedron 1996. [DOI: 10.1016/0040-4020(96)00874-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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