1
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Tong R, Liu S, Zhao C, Jiang D, Gao L, Wang W, Ye B, Song Z. 3-Silyl-3-Borylhex-4-Enoate: A Chiral Reagent for Asymmetric Crotylboration of Aldehydes. Org Lett 2022; 24:7822-7827. [PMID: 36250588 DOI: 10.1021/acs.orglett.2c03195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A nonracemic 3-silyl-3-borylhex-4-enoate reagent has been developed. Its asymmetric crotylboration of aldehydes provides Z-anti-homoallylic alcohols possessing a trisubstituted vinylsilane in high yields with excellent stereo- and enantioselectivity. Diverse decoration of vinylsilane and ester groups, as well as formation of functionalized THF rings, showcase the potential of the approach in the synthesis of polyketide natural products.
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Affiliation(s)
- Ruiqi Tong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Song Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Chen Zhao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Dongyang Jiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wanshu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Bengui Ye
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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2
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Gold(III) catalyzed stereoselective synthesis of dialkyl dihydrofuran acetates. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Chen Y, Song X, Gao L, Song Z. Intramolecular Sakurai Allylation of Geminal Bis(silyl) Enamide with Indolenine. A Diastereoselective Cyclization To Form Functionalized Hexahydropyrido[3,4- b]Indole. Org Lett 2021; 23:124-128. [PMID: 33346667 DOI: 10.1021/acs.orglett.0c03806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A fluoride-promoted intramolecular Sakurai allylation of geminal bis(silyl) enamide with indolenine has been developed. The reaction facilitates an efficient cyclization to give hexahydropyrido[3,4-b]indoles in good yields with high diastereoselectivity. The resulted cis, trans-stereochemistry further enables the ring-closing metathesis (RCM) reaction of two alkene moieties, giving a tetracyclic N-hetereocycle widely found as the core structure in akuammiline alkaloids.
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Affiliation(s)
- Yi Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Xuanyi Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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4
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Park J, Jung Y, Kim J, Lee E, Lee SY, Cho SH. Kinetic Resolution of α‐Silyl‐Substituted Allylboronate Esters via Chemo‐ and Stereoselective Allylboration of Aldehydes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jinyoung Park
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Yongsuk Jung
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Jeongho Kim
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Eunsung Lee
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Sarah Yunmi Lee
- Department of Chemistry Yonsei University Seoul 03722 Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
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5
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Mullapudi V, Ahmad I, Senapati S, Ramana CV. Total Synthesis of (+)-Petromyroxol, (-)- iso-Petromyroxol, and Possible Diastereomers. ACS OMEGA 2020; 5:25334-25348. [PMID: 33043213 PMCID: PMC7542842 DOI: 10.1021/acsomega.0c03674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 09/10/2020] [Indexed: 06/11/2023]
Abstract
The total synthesis of (+)-petromyroxol (1) and its seven diastereomers including the (-)-iso-petromyroxol (2) is described. The employed strategy involves the use of easily available C5-epimeric epoxides 5 and 5' and nonselective anomeric C1-allylation, proceeding with or without inversion at C2, thereby giving the possibility of synthesizing all possible diastereomers. Extensive two-dimensional (2D) NMR analyses of all eight diastereomers have been carried out to assign the chemical shifts of the central carbons and the corresponding attached hydrogens and to learn how the C/H-chemical shifts of the tetrahydrofuran ring were influenced by the adjacent centers.
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Affiliation(s)
- Venkannababu Mullapudi
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110002, India
| | - Iram Ahmad
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Sibadatta Senapati
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110002, India
| | - Chepuri V. Ramana
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110002, India
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6
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Fernandes RA, Pathare RS, Gorve DA. Advances in Total Synthesis of Some 2,3,5-Trisubstituted Tetrahydrofuran Natural Products. Chem Asian J 2020; 15:2815-2837. [PMID: 32702201 DOI: 10.1002/asia.202000753] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/21/2020] [Indexed: 11/06/2022]
Abstract
2,3,5-Trisubstituted tetrahydrofuran moiety is ubiquitous in natural products. These have served as appealing candidates for total synthesis due to their varied bio- and pharmaceutical activities. This tutorial review delineates the ingenious efforts by many researchers in the total synthesis of selected natural products based on a common 2,3,5-trisubstituted tetrahydrofuran core structure. Many of the syntheses display nuanced interplay between new methods and the ingenuity of planned strategies achieved through catalysis or cascade chemistry. In some cases, the chiron approach has come quite handy, wherein the structural features and the stereochemistry in select molecules could map well with naturally available starting materials. This compilation also aims to enhance the diversity space based on these natural products and further interest in sustainable total synthesis.
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Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Ramdas S Pathare
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Dnyaneshwar A Gorve
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
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7
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Chen J, Gao S, Chen M. Stereoselective Syntheses of γ,δ-Bifunctionalized Homoallylic Alcohols and Ethers via Chemoselective Allyl Addition to Aldehydes. Org Lett 2019; 21:9893-9897. [DOI: 10.1021/acs.orglett.9b03819] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jichao Chen
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Shang Gao
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Ming Chen
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
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8
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9
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Gao S, Chen J, Chen M. ( Z)-α-Boryl-crotylboron reagents via Z-selective alkene isomerization and application to stereoselective syntheses of ( E)-δ-boryl- syn-homoallylic alcohols. Chem Sci 2019; 10:3637-3642. [PMID: 30996958 PMCID: PMC6432281 DOI: 10.1039/c9sc00226j] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 02/03/2019] [Indexed: 11/21/2022] Open
Abstract
Stereoselective synthesis of (Z)-α-boryl-crotylboronate is developed. Ni-catalyzed Z-selective alkene isomerization of α-boryl substituted homoallylboronate provided the targeted (Z)-crotylboronate with high selectivity. Stereoselective addition of the novel crotylboron reagent to aldehydes gave (E)-δ-boryl-substituted syn-homoallylic alcohols with excellent diastereoselectivities. The vinyl boronate unit in the products can be directly used for a subsequent C-C bond-forming transformation as illustrated in the synthesis of the C1-7 fragment of the natural products nannocystin A and nannocystin Ax.
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Affiliation(s)
- Shang Gao
- Department of Chemistry and Biochemistry , Auburn University , Auburn , AL 36849 , USA .
| | - Jichao Chen
- Department of Chemistry and Biochemistry , Auburn University , Auburn , AL 36849 , USA .
| | - Ming Chen
- Department of Chemistry and Biochemistry , Auburn University , Auburn , AL 36849 , USA .
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10
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Cheng Z, Xing S, Guo J, Cheng B, Hu L, Zhang X, Lu Z. Highly Regioselective Sequential 1,1‐Dihydrosilylation of Terminal Aliphatic Alkynes with Primary Silanes. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900079] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Zhaoyang Cheng
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310058 China
| | - Shipei Xing
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310058 China
| | - Jun Guo
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310058 China
| | - Biao Cheng
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310058 China
| | - Lan‐Fang Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and EngineeringZhejiang University Hangzhou Zhejiang 310027 China
| | - Xing‐Hong Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and EngineeringZhejiang University Hangzhou Zhejiang 310027 China
| | - Zhan Lu
- Department of ChemistryZhejiang University Hangzhou Zhejiang 310058 China
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11
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Wang M, Gao S, Chen M. Stereoselective Syntheses of (E)-γ′,δ-Bisboryl-Substituted syn-Homoallylic Alcohols via Chemoselective Aldehyde Allylboration. Org Lett 2019; 21:2151-2155. [DOI: 10.1021/acs.orglett.9b00461] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mengzhou Wang
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Shang Gao
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Ming Chen
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
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12
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Hoffmeyer P, Schneider C. Stereoselective Synthesis of 2,3,5-Trisubstituted Tetrahydrofurans Initiated by a Titanium-BINOLate-Catalyzed Vinylogous Aldol Reaction. J Org Chem 2019; 84:1079-1084. [PMID: 30575382 DOI: 10.1021/acs.joc.8b02828] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The enantioselective synthesis of 2,3,5-trisubstituted tetrahydrofurans 3 has been achieved using a chiral titanium-BINOL complex as catalyst for the vinylogous Mukaiyama aldol reaction of bis(silyl) diendiolate 1 and an aldehyde. The ensuing BF3·OEt2-mediated Prins-type cyclization with a second aldehyde gave rise to 2,3,5-substituted tetrahydrofurans 3 with generally good yields and excellent stereocontrol. In this process, three new σ-bonds and three new stereogenic centers were generated in a one-pot process.
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Affiliation(s)
- Patrick Hoffmeyer
- Institut für Organische Chemie , University of Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
| | - Christoph Schneider
- Institut für Organische Chemie , University of Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
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13
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Davies T, Taylor SH, Graham AE. Nanoporous Aluminosilicate-Catalyzed Telescoped Acetalization-Direct Aldol Reactions of Acetals with 1,3-Dicarbonyl Compounds. ACS OMEGA 2018; 3:15482-15491. [PMID: 31458204 PMCID: PMC6644119 DOI: 10.1021/acsomega.8b02047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/01/2018] [Indexed: 05/11/2023]
Abstract
Nanoporous aluminosilicate materials, synthesized by an evaporation-induced self-assembly process, catalyze the direct aldol reaction of acyclic acetals with a range of 1,3-dicarbonyl compounds to produce the corresponding aldol addition products in high yield, rather than the expected Knoevenagel elimination products. By carrying out the reaction in the presence of either dimethoxy propane or the corresponding orthoester, it is possible to capitalize on the ability of these aluminosilicate materials to catalyze the corresponding acetalization reaction leading to the development of novel telescoped, acetalization-direct aldol addition reaction protocols.
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Affiliation(s)
- Thomas
Edward Davies
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building,
Park Place, Cardiff CF10 3AT, U.K.
| | - Stuart Hamilton Taylor
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building,
Park Place, Cardiff CF10 3AT, U.K.
| | - Andrew Edward Graham
- School
of Applied Sciences, University of South
Wales, Pontypridd CF37 4AT, U.K.
- E-mail:
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14
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Chu Z, Wang K, Gao L, Song Z. Chiral crotyl geminal bis(silane): a useful reagent for asymmetric Sakurai allylation by selective desilylation-enabled chirality transfer. Chem Commun (Camb) 2018; 53:3078-3081. [PMID: 28243645 DOI: 10.1039/c7cc00632b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Enantioselective synthesis of SiMe3/SiPh2Me-substituted crotyl geminal bis(silane) has been developed. This compound is a useful reagent for Ph3C+B(C6F5)4--catalyzed asymmetric Sakurai allylation and one-pot Sakurai allylation/Prins cyclization processes. Chemoselective desilylation of SiPh2Me leads to efficient chirality transfer.
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Affiliation(s)
- Zhiwen Chu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Kai Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China. and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
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15
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Pan JL, Chen C, Ma ZG, Zhou J, Wang LR, Zhang SY. Stereoselective Synthesis of Z-Vinylsilanes via Palladium-Catalyzed Direct Intermolecular Silylation of C(sp 2)-H Bonds. Org Lett 2017; 19:5216-5219. [PMID: 28933860 DOI: 10.1021/acs.orglett.7b02486] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An efficient and convenient palladium-catalyzed direct intermolecular silylation of C(sp2)-H bonds by using disilanes as the silicon source with the assistance of a readily removable bidentate directing group is reported. This strategy provided a regio- and stereoselective protocol for exclusive synthesis of Z-vinylsilanes with reasonable to excellent yields and good functional group compatibility. Silylation of the isolated palladacycle intermediate revealed the Z-stereoselective pathway. Moreover, the practicality and effectiveness of this method were illustrated by a gram-scale experiment and further functionalization of the silylation product.
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Affiliation(s)
- Jin-Long Pan
- School of Chemistry and Chemical Engineering, ‡Key Laboratory for Thin Film and Microfabrication of Ministry of Education, and §Zhiyuan College, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | - Chao Chen
- School of Chemistry and Chemical Engineering, ‡Key Laboratory for Thin Film and Microfabrication of Ministry of Education, and §Zhiyuan College, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | - Zhi-Gang Ma
- School of Chemistry and Chemical Engineering, ‡Key Laboratory for Thin Film and Microfabrication of Ministry of Education, and §Zhiyuan College, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | - Jia Zhou
- School of Chemistry and Chemical Engineering, ‡Key Laboratory for Thin Film and Microfabrication of Ministry of Education, and §Zhiyuan College, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | - Li-Ren Wang
- School of Chemistry and Chemical Engineering, ‡Key Laboratory for Thin Film and Microfabrication of Ministry of Education, and §Zhiyuan College, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering, ‡Key Laboratory for Thin Film and Microfabrication of Ministry of Education, and §Zhiyuan College, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
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16
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Chu Y, Pu Q, Tang Z, Gao L, Song Z. Enantioselective synthesis of crotyl geminal bis(silane) and its usage for asymmetric Sakurai allylation of acetals. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Courant T, Kumar R, Turcaud S, Micouin L. Rhodium(II)-Alkynyl Carbenoids Insertion into Si-H bonds: An Entry to Propargylic Geminal Bis(silanes). Org Lett 2016; 18:4818-4820. [PMID: 27603138 DOI: 10.1021/acs.orglett.6b02264] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
α-Alkynyl-α'-trimethylsilylhydrazones are used as novel Rh(II)-carbenoids precursors. These new carbenoids have shown very good reactivity in Si-H insertion reactions, leading to original propargylic geminal-bis(silanes) in a two-step sequential process.
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Affiliation(s)
- Thibaut Courant
- Laboratoire de Chimie et Biochimie Pharmacologique et Toxicologique, UMR 8601 CNRS-Université Paris-Descartes, Faculté des sciences Fondamentales et Biomédicales, 45 rue des Saints-Pères, 75006 Paris, France
| | - Rahul Kumar
- Laboratoire de Chimie et Biochimie Pharmacologique et Toxicologique, UMR 8601 CNRS-Université Paris-Descartes, Faculté des sciences Fondamentales et Biomédicales, 45 rue des Saints-Pères, 75006 Paris, France
| | - Serge Turcaud
- Laboratoire de Chimie et Biochimie Pharmacologique et Toxicologique, UMR 8601 CNRS-Université Paris-Descartes, Faculté des sciences Fondamentales et Biomédicales, 45 rue des Saints-Pères, 75006 Paris, France
| | - Laurent Micouin
- Laboratoire de Chimie et Biochimie Pharmacologique et Toxicologique, UMR 8601 CNRS-Université Paris-Descartes, Faculté des sciences Fondamentales et Biomédicales, 45 rue des Saints-Pères, 75006 Paris, France
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18
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Gan Z, Chu Z, Hu J, Su Z, Hu C, Gao L, Song Z. Tunable reactivity of geminal bis(silyl) enol derivatives leading to selective exo-IEDDA or Sakurai allylation with a β,γ-unsaturated ketoester. Chem Commun (Camb) 2016; 52:10137-40. [PMID: 27457733 DOI: 10.1039/c6cc04593f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Two contrasting pathways in a SnCl4-catalyzed reaction of geminal bis(silyl) enol derivatives with β,γ-unsaturated ketoesters have been achieved by tuning the R group in the enol moiety. While the electron-donating Bn-substituted enol ether undergoes an exo-selective inverse-electron-demand Diels-Alder (IEDDA) reaction to give dihydropyran, the electron-withdrawing Ac-substituted enol ester reacts as an allylsilane to provide a Sakurai-allylated product with predominant syn-selectivity.
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Affiliation(s)
- Zubao Gan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Zhiwen Chu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Jia Hu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Zhishan Su
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China. and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
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19
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Neumeyer M, Brückner R. Nonracemic γ-Lactones from the Sharpless Asymmetric Dihydroxylation of β,γ-Unsaturated Carboxylic Esters. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600520] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Markus Neumeyer
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
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20
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de la Torre A, Cuyamendous C, Bultel-Poncé V, Durand T, Galano JM, Oger C. Recent advances in the synthesis of tetrahydrofurans and applications in total synthesis. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.076] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Jang H, Shin I, Lee D, Kim H, Kim D. Stereoselective Substrate-Controlled Asymmetric Syntheses of both 2,5-cis
- and 2,5-trans
-Tetrahydrofuranoid Oxylipids: Stereodivergent Intramolecular Amide Enolate Alkylation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hongjun Jang
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Iljin Shin
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Dongjoo Lee
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Hyoungsu Kim
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Deukjoon Kim
- College of Pharmacy; Seoul National University; Seoul 08826 Korea
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22
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Jang H, Shin I, Lee D, Kim H, Kim D. Stereoselective Substrate-Controlled Asymmetric Syntheses of both 2,5-cis
- and 2,5-trans
-Tetrahydrofuranoid Oxylipids: Stereodivergent Intramolecular Amide Enolate Alkylation. Angew Chem Int Ed Engl 2016; 55:6497-501. [DOI: 10.1002/anie.201600637] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/10/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Hongjun Jang
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Iljin Shin
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Dongjoo Lee
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Hyoungsu Kim
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Deukjoon Kim
- College of Pharmacy; Seoul National University; Seoul 08826 Korea
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23
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Liu Z, Lin X, Yang N, Su Z, Hu C, Xiao P, He Y, Song Z. Unique Steric Effect of Geminal Bis(silane) To Control the High Exo-selectivity in Intermolecular Diels–Alder Reaction. J Am Chem Soc 2016; 138:1877-83. [PMID: 26799581 DOI: 10.1021/jacs.5b09689] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zengjin Liu
- Key Laboratory of Drug Targeting and Drug
Delivery System,
Ministry of Education, Department of Medicinal Chemistry, West China
School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Xinglong Lin
- Key Laboratory of Drug Targeting and Drug
Delivery System,
Ministry of Education, Department of Medicinal Chemistry, West China
School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Na Yang
- Key
Laboratory of Green Chemistry and Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Zhishan Su
- Key
Laboratory of Green Chemistry and Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Changwei Hu
- Key
Laboratory of Green Chemistry and Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Peihong Xiao
- Key Laboratory of Drug Targeting and Drug
Delivery System,
Ministry of Education, Department of Medicinal Chemistry, West China
School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Yanyang He
- Key Laboratory of Drug Targeting and Drug
Delivery System,
Ministry of Education, Department of Medicinal Chemistry, West China
School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Zhenlei Song
- Key Laboratory of Drug Targeting and Drug
Delivery System,
Ministry of Education, Department of Medicinal Chemistry, West China
School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
- State
Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
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24
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Lavinda O, Tran VT, Woerpel KA. Effect of conformational rigidity on the stereoselectivity of nucleophilic additions to five-membered ring bicyclic oxocarbenium ion intermediates. Org Biomol Chem 2015; 12:7083-91. [PMID: 25087588 DOI: 10.1039/c4ob01251h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nucleophilic substitution reactions of five-membered ring acetals bearing fused rings reveal that subtle changes in the structure of the fused ring can exert dramatic influences on selectivity. If the fused ring did not constrain the five-membered ring undergoing substitution, selectivity was comparable to what was observed for an unconstrained system (≥92% diastereoselectivity, favoring the product of inside attack on the oxocarbenium ion). If the ring were more constrained by including at least one oxygen atom in the ring, selectivity dropped considerably (to 60% diastereoselectivity in one case). Transition states of the nucleophilic addition of allyltrimethylsilane to selected oxocarbenium ions were calculated using DFT methods. These computational models reproduced the correlation between additional conformational rigidity and selectivity.
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Affiliation(s)
- Olga Lavinda
- Department of Chemistry, New York University, New York, New York 10003, USA.
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25
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Yin Z, Liu Z, Huang Z, Chu Y, Chu Z, Hu J, Gao L, Song Z. Synthesis of Functionalized γ-Lactone via Sakurai exo-Cyclization/Rearrangement of 3,3-Bis(silyl) Enol Ester with a Tethered Acetal. Org Lett 2015; 17:1553-6. [PMID: 25730288 DOI: 10.1021/acs.orglett.5b00437] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zhiping Yin
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Zengjin Liu
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Zhenggang Huang
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Yang Chu
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Zhiwen Chu
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Jia Hu
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Lu Gao
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting of Education Ministry and Department
of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
- State Key Laboratory of Biotherapy, West
China Hospital, Sichuan University, Chengdu 610041, P. R. China
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26
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Li L, Chu Y, Gao L, Song Z. Geminal bis(silane)-controlled regio- and stereoselective oxidative Heck reaction of enol ethers with terminal alkenes to give push–pull 1,3-dienes. Chem Commun (Camb) 2015; 51:15546-9. [PMID: 26352510 DOI: 10.1039/c5cc06448a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A geminal bis(silane)-controlled regio- and stereoselective oxidative Heck reaction of enol ethers with terminal alkenes has been developed. The reaction proceeds with α,β-coupling regioselectivity to give push–pull Z,E-1,3-dienes in good yields.
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Affiliation(s)
- Linjie Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- West China School of Pharmacy
- Sichuan University
- Chengdu
- China
| | - Yang Chu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- West China School of Pharmacy
- Sichuan University
- Chengdu
- China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- West China School of Pharmacy
- Sichuan University
- Chengdu
- China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry
- West China School of Pharmacy
- Sichuan University
- Chengdu
- China
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27
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Kamble SB, Shinde SH, Rode CV. Highly efficient triphenyl(3-sulfopropyl)phosphonium functionalized phosphotungstic acid on silica as a solid acid catalyst for selective mono-allylation of acetals. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00531k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A silica-supported zwitterion-functionalized phosphotungstic acid catalyst developed for the selective Hosomi–Sakurai reaction giving 93–99% yield of homoallyl ethers.
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Affiliation(s)
- Sumit B. Kamble
- Chemical Engineering & Process Development Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Suhas H. Shinde
- Chemical Engineering & Process Development Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Chandrashekhar V. Rode
- Chemical Engineering & Process Development Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
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28
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Ye X, Sun X, Huang Z, Yang N, Su Z, Hu C, Song Z. Regioselective 1,4- over 1,2-addition of 3,3-bis(silyl) allyloxy lithium to enals, enones and enoates. The remarkable α-effect of silicon. Org Biomol Chem 2014; 12:3021-5. [PMID: 24723152 DOI: 10.1039/c4ob00139g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A remarkable α-effect of silicon has been discovered that results in soft nucleophilicity at the Cγ of 3,3-bis(silyl) allyloxy lithium 1. The addition of 1 to α,β-unsaturated carbonyl compounds, including enals, proceeds in a 1,4- over 1,2-manner with medium to good regioselectivity, whereas the parent allyloxy lithium 4 undergoes complete 1,2-addition. The results from DFT calculations of HMPAcomplexed 1 and 4 provide the rationale to explain this different regioselectivity.
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Affiliation(s)
- Xincui Ye
- Key laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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29
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Gao L, Lu J, Song Z. Recent efforts to construct the B-ring of bryostatins. Chem Commun (Camb) 2014; 49:10211-20. [PMID: 24051556 DOI: 10.1039/c3cc45947k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Among macrocyclic natural products, bryostatins have excellent bioactivities and unique structures that make them highly attractive to synthetic chemists. Particularly challenging for the total synthesis of bryostatins is the B-ring, which features a cis-tetrahydropyran containing a geometrically defined exocyclic Z-methyl enoate. Synthetic chemists have recently displayed great prowess in their efforts to construct this ring, and here we summarize the progress towards this goal.
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Affiliation(s)
- Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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30
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Gao L, Lu J, Song Z, Lin X, Xu Y, Yin Z. [1,5]-Brook rearrangement: an overlooked but valuable silyl migration to synthesize configurationally defined vinylsilane. The unique steric and electronic effects of geminal bis(silane). Chem Commun (Camb) 2014; 49:8961-3. [PMID: 23963407 DOI: 10.1039/c3cc45002c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An unusual [1,5]-Brook rearrangement of the lithium alkoxide of geminal bis(silyl) homoallylic alcohol is described. The unique steric and electronic effects of geminal bis(silane) were found to be crucial for promoting this long-range silyl migration, as well as for facilitating the subsequent γ/Z-selective addition of silyl allyllithium with carbonyl compounds to synthesize diverse configurationally defined Z-vinylsilanes.
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Affiliation(s)
- Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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31
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Lin X, Ye X, Sun X, Zhang Y, Gao L, Song Z. [1,5]-Anion relay via intramolecular proton transfer to generate 3,3-bis(silyl) allyloxy lithium: a useful scaffold for syn-addition to aldehydes and ketones. Org Lett 2014; 16:1084-7. [PMID: 24499418 DOI: 10.1021/ol4036402] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A [1,5]-anion relay has been achieved in 3,3-bis(silyl) benzyl enol ether. Deprotonation at the sterically more accessible benzyl position triggers an intramolecular proton transfer to generate the thermodynamically more stable 3,3-bis(silyl) allyloxy lithium. This endo-oriented allyl anion is stable at -78 °C and undergoes diastereoselective syn-addition at the γ-position with aldehydes and ketones to give monobenzyl-substituted 1,2-diols.
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Affiliation(s)
- Xinglong Lin
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, ‡State Key Laboratory of Biotherapy, West China Hospital, Sichuan University , Chengdu 610041, P. R. China
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