1
|
Staronova L, Yamazaki K, Xu X, Shi H, Bickelhaupt FM, Hamlin TA, Dixon DJ. Cobalt-Catalyzed Enantio- and Regioselective C(sp 3 )-H Alkenylation of Thioamides. Angew Chem Int Ed Engl 2024; 63:e202316021. [PMID: 38143241 DOI: 10.1002/anie.202316021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 12/26/2023]
Abstract
An enantioselective cobalt-catalyzed C(sp3 )-H alkenylation of thioamides with but-2-ynoate ester coupling partners employing thioamide directing groups is presented. The method is operationally simple and requires only mild reaction conditions, while providing alkenylated products as single regioisomers in excellent yields (up to 85 %) and high enantiomeric excess [up to 91 : 9 enantiomeric ratio (er), or up to >99 : 1 er after a single recrystallization]. Diverse downstream derivatizations of the products are demonstrated, delivering a range of enantioenriched constructs. Extensive computational studies using density functional theory provide insight into the detailed reaction mechanism, origin of enantiocontrol, and the unusual regioselectivity of the alkenylation reaction.
Collapse
Affiliation(s)
- Lucia Staronova
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Ken Yamazaki
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
- Department of Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Xing Xu
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Heyao Shi
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - F Matthias Bickelhaupt
- Department of Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
- Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
- Department of Chemical Sciences, University of Johannesburg, Auckland Park, Johannesburg, 2006, South Africa
| | - Trevor A Hamlin
- Department of Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| |
Collapse
|
2
|
Tian Q, Xu S, Zhang C, Liu X, Wu X, Li Y. Palladium Catalyzed Direct Carbonylative Thiomethylation of Aryldiazonium Salts and Amines with 4-(Methylthio)-2-Butanone as (Methylthio) Transfer Agent. J Org Chem 2021; 86:8797-8804. [PMID: 34142838 DOI: 10.1021/acs.joc.1c00665] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, an interesting palladium-catalyzed procedure for the direct carbonylative thiomethylation of aromatic amine derivatives with 4-methylthio-2-butanone is developed. Using 4-methylthio-2-butanone as (methylthio) transfer agent, a variety of corresponding thioesters are obtained with moderate to good yields under base-free condition. In addition, good functional group tolerance can be observed.
Collapse
Affiliation(s)
- Qingqiang Tian
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Shasha Xu
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Chiying Zhang
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Xinyi Liu
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Xiangwei Wu
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Yahui Li
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.,State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bio-engineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| |
Collapse
|
3
|
Jaiswal A, Sharma AK, Preeti, Singh KN. Copper‐Catalyzed Decarboxylative Synthesis of α‐Ketothioamides Using α,β‐Unsaturated Arylcarboxylic Acids, Alicyclic Secondary Amines and Elemental Sulfur. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Anjali Jaiswal
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Anup Kumar Sharma
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Preeti
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Krishna Nand Singh
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| |
Collapse
|
4
|
Vankar JK, Gupta A, Jadav JP, Nanjegowda SH, Gururaja GN. The thioamidation of gem-dibromoalkenes in an aqueous medium. Org Biomol Chem 2021; 19:2473-2480. [PMID: 33651057 DOI: 10.1039/d0ob02319a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct integration of sulphur and amine groups with 1,1-dibromoalkenes for thioamide synthesis has been achieved in an aqueous medium. The presented green protocol emphasizes the suitability of aqueous media for the thioamidation reaction and enables greater selectivity with synthetic utility. A wide range of thioamides in moderate to excellent yields has been achieved using readily available starting materials, with the use of no organic solvents, catalysts, or additives.
Collapse
Affiliation(s)
- Jigarkumar K Vankar
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
| | | | | | | | | |
Collapse
|
5
|
Klásek A, Rudolf O, Rouchal M, Lyčka A. Reaction of 3-Hydroxyquinoline-2,4-diones with Inorganic Thiocyanates in the Presence of Ammonium or Alkylammonium Ions: the Unexpected Replacement of a Hydroxy Group by an Amino Group. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201400189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
6
|
Saeidian H, Vahdati-Khajehi S, Bazghosha H, Mirjafary Z. Na2S-mediated thionation: an efficient access to secondary and tertiary α-ketothioamides via Willgerodt–Kindler reaction of readily available arylglyoxals with amines. J Sulphur Chem 2014. [DOI: 10.1080/17415993.2014.955026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Hamid Saeidian
- Department of Science, Payame Noor University (PNU), PO Box: 19395-4697, Tehran, Iran
| | - Saleh Vahdati-Khajehi
- Department of Science, Payame Noor University (PNU), PO Box: 19395-4697, Tehran, Iran
| | - Homeira Bazghosha
- Department of Science, Payame Noor University (PNU), PO Box: 19395-4697, Tehran, Iran
| | - Zohreh Mirjafary
- Department of Chemistry, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| |
Collapse
|
7
|
Rong B, Ding L, Yu H, Yang Q, Liu X, Xu D, Li G, Zhao B. Pd-catalyzed allylic alkylation of thioamides. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.081] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
8
|
Yu H, Liu X, Ding L, Yang Q, Rong B, Gao A, Zhao B, Yang H. Pd-catalyzed α-arylation of thioamides. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.114] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Eftekhari-Sis B, Vahdati-Khajeh S, Amini SM, Zirak M, Saraei M. Willgerodt–Kindler reaction of arylglyoxals with amines and sulfur in aqueous media: a simple and efficient synthesis of α-ketothioamides. J Sulphur Chem 2013. [DOI: 10.1080/17415993.2012.757614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Bagher Eftekhari-Sis
- a Department of Chemistry , University of Maragheh , PO Box 55181-83111, Maragheh , Iran
| | - Saleh Vahdati-Khajeh
- a Department of Chemistry , University of Maragheh , PO Box 55181-83111, Maragheh , Iran
| | - S. Motahhareh Amini
- a Department of Chemistry , University of Maragheh , PO Box 55181-83111, Maragheh , Iran
| | - Maryam Zirak
- b Department of Chemistry , Payame Noor University , PO Box 19395-3697, Tehran , Iran
| | - Mahnaz Saraei
- b Department of Chemistry , Payame Noor University , PO Box 19395-3697, Tehran , Iran
| |
Collapse
|
10
|
Valdez-Rojas JE, Ríos-Guerra H, Ramírez-Sánchez AL, García-González G, Álvarez-Toledano C, López-Cortés JG, Toscano RA, Penieres-Carrillo JG. A study of the Willgerodt–Kindler reaction to obtain thioamides and α-ketothioamides under solvent-less conditions. CAN J CHEM 2012. [DOI: 10.1139/v2012-030] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this paper, the results obtained in the synthesis of thioamides and α-ketothioamides by a modification of the Willgerodt–Kindler reaction, under solvent-free and noncatalyst conditions using IR energy as a source of activation, are presented. The use of IR energy in these reactions has been shown to lead to a mixture of thioamide and α-ketothioamide as the main products in most cases, with the latter predominating. The yields of α-ketothioamides from most of these reactions are better than those reported previously. To the best of our knowledge, this is the first time that IR energy has been applied to promote the Willgerodt–Kindler reaction.
Collapse
Affiliation(s)
- José Ernesto Valdez-Rojas
- Facultad de Estudios Superiores Cuautitlán-Universidad Nacional Autónoma de México, Sección de Química Orgánica, FESC, Campo 1, Avenida 1 de mayo s/n, Colonia Santa María Guadalupe Las Torres, Cuautitlán Izcalli, C. P. 54740, México
| | - Hulme Ríos-Guerra
- Facultad de Estudios Superiores Cuautitlán-Universidad Nacional Autónoma de México, Sección de Química Orgánica, FESC, Campo 1, Avenida 1 de mayo s/n, Colonia Santa María Guadalupe Las Torres, Cuautitlán Izcalli, C. P. 54740, México
| | - Alma Leticia Ramírez-Sánchez
- Facultad de Estudios Superiores Cuautitlán-Universidad Nacional Autónoma de México, Sección de Química Orgánica, FESC, Campo 1, Avenida 1 de mayo s/n, Colonia Santa María Guadalupe Las Torres, Cuautitlán Izcalli, C. P. 54740, México
| | - Guadalupe García-González
- Facultad de Estudios Superiores Cuautitlán-Universidad Nacional Autónoma de México, Sección de Química Orgánica, FESC, Campo 1, Avenida 1 de mayo s/n, Colonia Santa María Guadalupe Las Torres, Cuautitlán Izcalli, C. P. 54740, México
| | - Cecilio Álvarez-Toledano
- Instituto de Química-Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, México D.F, C.P. 04510, México
| | - José Guadalupe López-Cortés
- Instituto de Química-Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, México D.F, C.P. 04510, México
| | - Rubén A. Toscano
- Instituto de Química-Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, México D.F, C.P. 04510, México
| | - José Guillermo Penieres-Carrillo
- Facultad de Estudios Superiores Cuautitlán-Universidad Nacional Autónoma de México, Sección de Química Orgánica, FESC, Campo 1, Avenida 1 de mayo s/n, Colonia Santa María Guadalupe Las Torres, Cuautitlán Izcalli, C. P. 54740, México
| |
Collapse
|
11
|
Ogawa T, Mouri S, Yazaki R, Kumagai N, Shibasaki M. Intermediate as catalyst: catalytic asymmetric conjugate addition of nitroalkanes to α,β-unsaturated thioamides. Org Lett 2011; 14:110-3. [PMID: 22111950 DOI: 10.1021/ol202898e] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Catalytic asymmetric conjugate addition of nitroalkanes to α,β-unsaturated thioamides is promoted by a mesitylcopper/(R)-DTBM-Segphos precatalyst, affording γ-nitrothioamides in moderate to high syn-selectivity and excellent enantioselectivity. The intermediate Cu-thioamide enolate functions as a soft Lewis acid/hard Brønsted base cooperative catalyst to drive the catalytic cycle efficiently under proton transfer conditions.
Collapse
Affiliation(s)
- Takanori Ogawa
- Institute of Microbial Chemistry, Tokyo, 3-14-23 Kamiosaki, Tokyo 141-0021, Japan
| | | | | | | | | |
Collapse
|
12
|
Abdur Rahim M, Praveen Rao P, Bhardwaj A, Kaur J, Huang Z, Knaus EE. Isomeric acetoxy analogs of celecoxib and their evaluation as cyclooxygenase inhibitors. Bioorg Med Chem Lett 2011; 21:6074-80. [DOI: 10.1016/j.bmcl.2011.08.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Revised: 08/08/2011] [Accepted: 08/11/2011] [Indexed: 10/17/2022]
|
13
|
Suzuki Y, Yazaki R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Intramolecular Conjugate Addition of Thioamide to α,β-Unsaturated Esters. Chemistry 2011; 17:11998-2001. [DOI: 10.1002/chem.201102332] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Indexed: 11/12/2022]
|
14
|
Mojtahedi MM, Alishiri T, Abaee MS. Ultrasound-Mediated Willgerodt–Kindler Reactions: Non-thermal Synthesis of Thioacetamides. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.550269] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Mohammad M. Mojtahedi
- a Chemistry and Chemical Engineering Research Center of Iran , P.O. Box 14335-186, Tehran, Iran
| | - Tooba Alishiri
- a Chemistry and Chemical Engineering Research Center of Iran , P.O. Box 14335-186, Tehran, Iran
| | - M. Saeed Abaee
- a Chemistry and Chemical Engineering Research Center of Iran , P.O. Box 14335-186, Tehran, Iran
| |
Collapse
|
15
|
Sharma I, Crich D. Direct Fmoc-chemistry-based solid-phase synthesis of peptidyl thioesters. J Org Chem 2011; 76:6518-24. [PMID: 21718046 DOI: 10.1021/jo200497j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Attachment of a growing peptide chain to a glycylaminomethyl resin via a thioglycinamide bond is compatible with Fmoc-chemistry solid-phase peptide synthesis. Subsequent S-alkylation of the thioamide gives a thioimide that, on treatment with aqueous trifluoroacetic acid, releases the peptide from the resin in the form of a C-terminal thioester.
Collapse
Affiliation(s)
- Indrajeet Sharma
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, USA
| | | |
Collapse
|
16
|
Yazaki R, Kumagai N, Shibasaki M. Cooperative activation of alkyne and thioamide functionalities; direct catalytic asymmetric conjugate addition of terminal alkynes to α,β-unsaturated thioamides. Chem Asian J 2011; 6:1778-90. [PMID: 21538905 DOI: 10.1002/asia.201100050] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2011] [Indexed: 01/02/2023]
Abstract
A detailed study of the direct catalytic asymmetric conjugate addition of terminal alkynes to α,β-unsaturated thioamides is described. A soft Lewis acid/hard Brønsted base cooperative catalyst, comprising [Cu(CH(3)CN)(4)]PF(6), bisphosphine ligand, and Li(OC(6)H(4)-p-OMe) simultaneously activated both substrates to compensate for the low reactivity of copper alkynylide. A series of control experiments revealed that the intermediate copper-thioamide enolate functioned as a Brønsted base to generate copper alkynylide from the terminal alkyne, thus driving the catalytic cycle through an efficient proton transfer between substrates. These findings led to the identification of a more convenient catalyst using potassium hexamethyldisilazane (KHMDS) as the Brønsted base, which was particularly effective for the reaction of silylacetylenes. Divergent transformation of the thioamide functionality and a concise enantioselective synthesis of a GPR40 receptor agonist AMG-837 highlighted the synthetic utility of the present catalysis.
Collapse
Affiliation(s)
- Ryo Yazaki
- Institute of Microbial Chemistry, Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | | | | |
Collapse
|
17
|
Yazaki R, Kumagai N, Shibasaki M. Enantioselective synthesis of a GPR40 agonist AMG 837 via catalytic asymmetric conjugate addition of terminal alkyne to α,β-unsaturated thioamide. Org Lett 2011; 13:952-5. [PMID: 21291204 DOI: 10.1021/ol102998w] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A concise enantioselective synthetic route to a potent GPR40 agonist AMG 837 is described. The crucial catalytic asymmetric conjugate addition of terminal alkyne was promoted by a soft Lewis acid/hard Brønsted base cooperative catalyst, allowing efficient construction of the requisite stereogenic center. The thioamide functional group is key to both activation in asymmetric alkynylation and facile transformation into carboxylic acid.
Collapse
Affiliation(s)
- Ryo Yazaki
- Institute of Microbial Chemistry, Tokyo, Japan
| | | | | |
Collapse
|
18
|
Yazaki R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Conjugate Addition of Terminal Alkynes to α,β-Unsaturated Thioamides. J Am Chem Soc 2010; 132:10275-7. [DOI: 10.1021/ja105141x] [Citation(s) in RCA: 145] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryo Yazaki
- Institute of Microbial Chemistry, Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry, Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry, Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
19
|
A new rearrangement of spiro[indane-1,3′-thiophene] and spiro[naphthalene-1,3′-thiophene] derivatives accompanied by opening of the cycloalkane ring. MONATSHEFTE FUR CHEMIE 2010. [DOI: 10.1007/s00706-009-0233-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
Suzuki Y, Yazaki R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Mannich-Type Reaction of Thioamides. Angew Chem Int Ed Engl 2009; 48:5026-9. [DOI: 10.1002/anie.200901588] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
Suzuki Y, Yazaki R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Mannich-Type Reaction of Thioamides. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901588] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
22
|
Ying Y, Taori K, Kim H, Hong J, Luesch H. Total synthesis and molecular target of largazole, a histone deacetylase inhibitor. J Am Chem Soc 2008; 130:8455-9. [PMID: 18507379 DOI: 10.1021/ja8013727] [Citation(s) in RCA: 165] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Full details of the concise and convergent synthesis (eight steps, 19% overall yield), its extension to the preparation of a series of key analogues, and the molecular target and pharmacophore of largazole are described. Central to the synthesis of largazole is a macrocyclization reaction for formation of the strained 16-membered depsipeptide core followed by an olefin cross-metathesis reaction for installation of the thioester. The biological evaluation of largazole and its key analogues, including an acetyl analogue, a thiol analogue, and a hydroxyl analogue, suggested that histone deacetylases (HDACs) are molecular targets of largazole and largazole is a class I HDAC inhibitor. In addition, structure-activity relationship (SAR) studies revealed that the thiol group is the pharmacophore of the natural product. Largazole's HDAC inhibitory activity correlates with its antiproliferative activity.
Collapse
Affiliation(s)
- Yongcheng Ying
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
| | | | | | | | | |
Collapse
|
23
|
|
24
|
Harrowven DC, Lucas MC, Howes PD. The synthesis of a natural product family: from debromoisolaurinterol to the aplysins. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(00)01055-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
25
|
A new method of forming resin bound thioesters and their use as ‘traceless’ linkers in solid phase synthesis. Tetrahedron Lett 2000. [DOI: 10.1016/s0040-4039(99)02345-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
26
|
Total syntheses of aplysin and debromoaplysin using a diastereoselective, sulfur mediated radical cyclisation strategy. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)00768-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|