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Le S, Bai Y, Qiu J, Zhang Z, Zheng H, Zhu G. Access to cyclopentenones via copper-catalyzed 5- endo trifluoromethylcarbocyclization of ynones. Org Chem Front 2022. [DOI: 10.1039/d2qo00843b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A copper-catalyzed 5-endo-selective trifluoromethylcarbocyclization of ynones is realized for the direct construction of trifluoromethylated cyclopentenones.
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Affiliation(s)
- Siya Le
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Yihui Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Jiayan Qiu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Hanliang Zheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China
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2
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Qu B, Wei X, Zeng X, Yang BS, Desrosiers JN, Savoie J, Wang J, Marsini MA, Li Z, Haddad N, Lorenz JC, Tielmann P, Maier N, Song JJ, Senanayake CH. Large-Scale Enantioselective Reduction of 2,3-Disubstituted Indenopyridine Enables a Practical Manufacturing Process for an 11β-HSD-1 Inhibitor. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bo Qu
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Xudong Wei
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Xingzhong Zeng
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Bing-Shiou Yang
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jean-Nicolas Desrosiers
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jolaine Savoie
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jun Wang
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Maurice A. Marsini
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Zhibin Li
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nizar Haddad
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jon C. Lorenz
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Patrick Tielmann
- Global Department Process Development Chemicals, Boehringer Ingelheim Pharma GmbH & Co. KG, Binger Strasse 173, 55216 Ingelheim, Germany
| | - Nora Maier
- Global Department Process Development Chemicals, Boehringer Ingelheim Pharma GmbH & Co. KG, Binger Strasse 173, 55216 Ingelheim, Germany
| | - Jinhua J. Song
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Chris H. Senanayake
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
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3
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Ikemoto H, Tanaka R, Sakata K, Kanai M, Yoshino T, Matsunaga S. Stereoselective Synthesis of Tetrasubstituted Alkenes via a Cp*Co
III
‐Catalyzed C−H Alkenylation/Directing Group Migration Sequence. Angew Chem Int Ed Engl 2017; 56:7156-7160. [DOI: 10.1002/anie.201703193] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Hideya Ikemoto
- Graduate School of Pharmaceutical Sciences The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Ryo Tanaka
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Ken Sakata
- Faculty of Pharmaceutical Sciences Hoshi University Ebara, Shinagawa-ku Tokyo 142-8501 Japan
- ACT-C Japan Science and Technology Agency Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku Sapporo 060-0812 Japan
- ACT-C Japan Science and Technology Agency Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku Sapporo 060-0812 Japan
- ACT-C Japan Science and Technology Agency Japan
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4
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Ikemoto H, Tanaka R, Sakata K, Kanai M, Yoshino T, Matsunaga S. Stereoselective Synthesis of Tetrasubstituted Alkenes via a Cp*Co
III
‐Catalyzed C−H Alkenylation/Directing Group Migration Sequence. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703193] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Hideya Ikemoto
- Graduate School of Pharmaceutical Sciences The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Ryo Tanaka
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku Sapporo 060-0812 Japan
| | - Ken Sakata
- Faculty of Pharmaceutical Sciences Hoshi University Ebara, Shinagawa-ku Tokyo 142-8501 Japan
- ACT-C Japan Science and Technology Agency Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku Sapporo 060-0812 Japan
- ACT-C Japan Science and Technology Agency Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku Sapporo 060-0812 Japan
- ACT-C Japan Science and Technology Agency Japan
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5
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Kotek V, Dvořáková H, Tobrman T. Modular and Highly Stereoselective Approach to All-Carbon Tetrasubstituted Alkenes. Org Lett 2015; 17:608-11. [DOI: 10.1021/ol503624v] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Vladislav Kotek
- Department of Organic Chemistry and ‡Laboratory of
NMR Spectroscopy, University of Chemistry and Technology, Prague, Technická
5, 166 28 Prague 6, Czech Republic
| | - Hana Dvořáková
- Department of Organic Chemistry and ‡Laboratory of
NMR Spectroscopy, University of Chemistry and Technology, Prague, Technická
5, 166 28 Prague 6, Czech Republic
| | - Tomáš Tobrman
- Department of Organic Chemistry and ‡Laboratory of
NMR Spectroscopy, University of Chemistry and Technology, Prague, Technická
5, 166 28 Prague 6, Czech Republic
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Abstract
This article comprehensively reviews the syntheses of all known sex pheromones of scales and mealybugs, describes how they were identified, and how the synthetic pheromones are used in insect management.
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Affiliation(s)
- Yunfan Zou
- Department of Entomology
- University of California
- Riverside
- USA
| | - Jocelyn G. Millar
- Department of Entomology
- University of California
- Riverside
- USA
- Department of Chemistry
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Kühbandner S, Bello JE, Mori K, Millar JG, Ruther J. Elucidating Structure-Bioactivity Relationships of Methyl-Branched Alkanes in the Contact Sex Pheromone of the Parasitic Wasp Lariophagus distinguendus. INSECTS 2013; 4:743-60. [PMID: 26462534 PMCID: PMC4553514 DOI: 10.3390/insects4040743] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 11/25/2013] [Accepted: 11/27/2013] [Indexed: 11/17/2022]
Abstract
The exoskeletons of insects are covered by complex mixtures of cuticular hydrocarbons (CHCs) which are involved in social and sexual communication. However, little is known about the relationship between the structures of CHCs and their behavioral activity. The key component of the contact sex pheromone of the parasitoid Lariophagus distinguendus is 3-methylheptacosane (3-MeC27), which is present in CHC profiles of both females and newly emerged males. The CHCs of females and young males elicit wing-fanning behavior in older males. However, as young males age, 3-MeC27 disappears from their CHC profiles and they no longer elicit wing-fanning responses from other males. We applied enantiopure 3-MeC27 and structurally related CHCs (with respect to chain length or methyl-branch position) to the cuticle of aged male dummies and recorded the wing-fanning behavior of responding males. Only the two enantiomers of 3-MeC27 restored the dummies' attractiveness. The addition of structurally related CHCs or various n-alkanes to bioactive dummies of young males and females significantly decreased wing-fanning by test males. Hence, L. distinguendus males respond specifically but not enantioselectively to 3-MeC27, and perceive the CHC profiles as a whole. Both removal (as is the case with 3-MeC27 in aging males) and addition of individual compounds may disrupt the behavioral response.
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Affiliation(s)
- Stephan Kühbandner
- Institute of Zoology, University of Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
| | - Jan E Bello
- Department of Chemistry, University of California, Riverside, CA 92521, USA.
| | - Kenji Mori
- Photosensitive Materials Research Center, Toyo Gosei Co., Ltd., 4-2-1 Wakahagi, Inzai-shi, Chiba 270-1609, Japan.
| | - Jocelyn G Millar
- Department of Chemistry, University of California, Riverside, CA 92521, USA.
- Department of Entomology, University of California, Riverside, CA 92521, USA.
| | - Joachim Ruther
- Institute of Zoology, University of Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
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