The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Sunil K. Ghosh - One of the best experts on this subject based on the ideXlab platform.
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A Cyclic Acetal Tethered Intramolecular Diels—Alder Cycloaddition. Studies Directed Toward a Total Synthesis of (.+-.)-Fusidilactone C.
ChemInform, 2011Co-Authors: Sunil K. Ghosh, Yonggang Wei, Aleksey I. Gerasyuto, John B. Feltenberger, Jiashi Wang, Richard P. HsungAbstract:Cycloaddition precursor (I) allows a facile and unique intramolecular Diels—Alder Cycloaddition, proceeding highly endo-selective to provide the endo-I and endo-II products (II) and (III).
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Stereoselective Ketal-Tethered Intramolecular Diels−Alder Cycloadditions. An Approach to the 2-Oxadecalin Spiroketal Core of Antifungal Agent Fusidilactone C
Organic letters, 2004Co-Authors: Jiashi Wang, Richard P. Hsung, Sunil K. GhoshAbstract:An approach toward the 2-oxadecalin spiroketal core of fusidilactone C via a rare ketal-tethered intramolecular Diels−Alder Cycloaddition is described here. This intramolecular Diels−Alder Cycloaddition is highly endo-selective and overall depended upon the nature of solvents and Lewis acids. We also observed some remarkable rate acceleration in MeOH.
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stereoselective ketal tethered intramolecular diels alder Cycloadditions an approach to the 2 oxadecalin spiroketal core of antifungal agent fusidilactone c
Organic Letters, 2004Co-Authors: Jiashi Wang, Richard P. Hsung, Sunil K. GhoshAbstract:An approach toward the 2-oxadecalin spiroketal core of fusidilactone C via a rare ketal-tethered intramolecular Diels−Alder Cycloaddition is described here. This intramolecular Diels−Alder Cycloaddition is highly endo-selective and overall depended upon the nature of solvents and Lewis acids. We also observed some remarkable rate acceleration in MeOH.
K. N. Houk - One of the best experts on this subject based on the ideXlab platform.
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Origins of Selectivities in the Stork Diels–Alder Cycloaddition for the Synthesis of (±)-4-Methylenegermine
Organic letters, 2018Co-Authors: Xiao-song Xue, Brian J. Levandowski, K. N. HoukAbstract:The remarkably high stereoselectivity of a Diels–Alder Cycloaddition designed by Stork for the synthesis of germine has been examined with theory. We conceived a collaboration with Gilbert Stork, the great synthetic chemist and collaborator. We wished to complement Stork's insights with computations to explain the extraordinary selectivity he designed to introduce four new stereocenters in one step. Stork passed away on October 21, 2017, at age 95, sadly before we finished this work.
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origins of selectivities in the stork diels alder Cycloaddition for the synthesis of 4 methylenegermine
Organic Letters, 2018Co-Authors: Xiao-song Xue, Brian J. Levandowski, K. N. HoukAbstract:The remarkably high stereoselectivity of a Diels–Alder Cycloaddition designed by Stork for the synthesis of germine has been examined with theory. We conceived a collaboration with Gilbert Stork, the great synthetic chemist and collaborator. We wished to complement Stork's insights with computations to explain the extraordinary selectivity he designed to introduce four new stereocenters in one step. Stork passed away on October 21, 2017, at age 95, sadly before we finished this work.
Xiao-song Xue - One of the best experts on this subject based on the ideXlab platform.
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Origins of Selectivities in the Stork Diels–Alder Cycloaddition for the Synthesis of (±)-4-Methylenegermine
Organic letters, 2018Co-Authors: Xiao-song Xue, Brian J. Levandowski, K. N. HoukAbstract:The remarkably high stereoselectivity of a Diels–Alder Cycloaddition designed by Stork for the synthesis of germine has been examined with theory. We conceived a collaboration with Gilbert Stork, the great synthetic chemist and collaborator. We wished to complement Stork's insights with computations to explain the extraordinary selectivity he designed to introduce four new stereocenters in one step. Stork passed away on October 21, 2017, at age 95, sadly before we finished this work.
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origins of selectivities in the stork diels alder Cycloaddition for the synthesis of 4 methylenegermine
Organic Letters, 2018Co-Authors: Xiao-song Xue, Brian J. Levandowski, K. N. HoukAbstract:The remarkably high stereoselectivity of a Diels–Alder Cycloaddition designed by Stork for the synthesis of germine has been examined with theory. We conceived a collaboration with Gilbert Stork, the great synthetic chemist and collaborator. We wished to complement Stork's insights with computations to explain the extraordinary selectivity he designed to introduce four new stereocenters in one step. Stork passed away on October 21, 2017, at age 95, sadly before we finished this work.
Yasumasa Hamada - One of the best experts on this subject based on the ideXlab platform.
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remarkable effects of titanium tetrachloride in diastereoselective aza diels alder Cycloaddition synthesis of s piperazic acid
Tetrahedron Letters, 2005Co-Authors: Kazuishi Makino, Yoshiaki Henmi, Makiko Terasawa, Osamu Hara, Yasumasa HamadaAbstract:Abstract Titanium tetrachloride-mediated aza Diels–Alder Cycloaddition using a chiral diene and an aza dienophile proceeds in highly diastereoselective manner to form a dehydropiperazic acid derivative in high yield, and diastereoselectivity of the reaction depends on the quantity of titanium tetrachloride.
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Remarkable effects of titanium tetrachloride in diastereoselective aza Diels–Alder Cycloaddition: synthesis of (S)-piperazic acid
Tetrahedron Letters, 2005Co-Authors: Kazuishi Makino, Yoshiaki Henmi, Makiko Terasawa, Osamu Hara, Yasumasa HamadaAbstract:Abstract Titanium tetrachloride-mediated aza Diels–Alder Cycloaddition using a chiral diene and an aza dienophile proceeds in highly diastereoselective manner to form a dehydropiperazic acid derivative in high yield, and diastereoselectivity of the reaction depends on the quantity of titanium tetrachloride.
Richard P. Hsung - One of the best experts on this subject based on the ideXlab platform.
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A Cyclic Acetal Tethered Intramolecular Diels—Alder Cycloaddition. Studies Directed Toward a Total Synthesis of (.+-.)-Fusidilactone C.
ChemInform, 2011Co-Authors: Sunil K. Ghosh, Yonggang Wei, Aleksey I. Gerasyuto, John B. Feltenberger, Jiashi Wang, Richard P. HsungAbstract:Cycloaddition precursor (I) allows a facile and unique intramolecular Diels—Alder Cycloaddition, proceeding highly endo-selective to provide the endo-I and endo-II products (II) and (III).
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An Enantioselective Synthesis of the ABD Tricycle for (-)-Phomactin A Featuring Rawal's Asymmetric Diels-Alder Cycloaddition.
Advanced synthesis & catalysis, 2008Co-Authors: Lingfeng You, Richard P. Hsung, Aaron A. Bedermann, Aleksey V. Kurdyumov, Yu Tang, Grant S. Buchanan, Kevin P. ColeAbstract:An enantioselective synthesis of the ABD-ring of (−)-phomactin A is described here. The sequence features Rawal’s asymmetric Diels-Alder Cycloaddition. The overall length is significantly reduced from our previous attempt.
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Stereoselective Ketal-Tethered Intramolecular Diels−Alder Cycloadditions. An Approach to the 2-Oxadecalin Spiroketal Core of Antifungal Agent Fusidilactone C
Organic letters, 2004Co-Authors: Jiashi Wang, Richard P. Hsung, Sunil K. GhoshAbstract:An approach toward the 2-oxadecalin spiroketal core of fusidilactone C via a rare ketal-tethered intramolecular Diels−Alder Cycloaddition is described here. This intramolecular Diels−Alder Cycloaddition is highly endo-selective and overall depended upon the nature of solvents and Lewis acids. We also observed some remarkable rate acceleration in MeOH.
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stereoselective ketal tethered intramolecular diels alder Cycloadditions an approach to the 2 oxadecalin spiroketal core of antifungal agent fusidilactone c
Organic Letters, 2004Co-Authors: Jiashi Wang, Richard P. Hsung, Sunil K. GhoshAbstract:An approach toward the 2-oxadecalin spiroketal core of fusidilactone C via a rare ketal-tethered intramolecular Diels−Alder Cycloaddition is described here. This intramolecular Diels−Alder Cycloaddition is highly endo-selective and overall depended upon the nature of solvents and Lewis acids. We also observed some remarkable rate acceleration in MeOH.