1
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Abstract
The total synthesis of geldanamycin, a well-known polyketide that exhibited potent anticancer activity by inhibiting Hsp90, was finished in 26 long linear steps with 2.65% overall yield. High convergency of the synthesis was achieved by the disconnection between C12 and C13 that gives C5-C12 and C13-C21 fragments as major building blocks. The use of an alkynyl ketone as the precursor of the C5-C12 fragment enabled a reagent-controlled establishment of C7 chirality and a highly flexible substituent exchange at C8, making the synthetic route suitable for deep-seated structural modifications on geldanamycin.
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Affiliation(s)
- Zhi Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Yunfeng Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Rentao Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Xiaoming Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
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2
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Rahman MA, Reddy NM, Yadav JS. Progress towards the Synthesis of (‐)‐Ushikulide A: Synthesis of C1‐C15 Aliphatic and C17‐C31 Spiroketal Fragments by an Aldol Approach. ChemistrySelect 2019. [DOI: 10.1002/slct.201900252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mohammad Ataur Rahman
- Centre for Semiochemicals DivisionCSIR-Indian Institute of Chemical Technology Hyderabad
- Department of Chemistry and Chemical BiologyHarvard University, Cambridge Massachusetts 02138 United States
| | - N. Mallikarjuna Reddy
- Centre for Semiochemicals DivisionCSIR-Indian Institute of Chemical Technology Hyderabad
| | - Jhillu Singh Yadav
- Centre for Semiochemicals DivisionCSIR-Indian Institute of Chemical Technology Hyderabad
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3
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Muralikrishna K, Satyanarayana V, Kumar GC, Yadav JS. Studies towards the Synthesis of Aldgamycin – M. ChemistrySelect 2019. [DOI: 10.1002/slct.201803591] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Katta Muralikrishna
- Department: Center for SemiochemicalsInstitution: Indian Institute of Chemical Technology Address 1 CSIR- Indian Institute of Chemical Technology Hyderabad -500007 India
| | - Vavilapalli Satyanarayana
- Department: Center for SemiochemicalsInstitution: Indian Institute of Chemical Technology Address 1 CSIR- Indian Institute of Chemical Technology Hyderabad -500007 India
| | - Gavireddy Chaithanya Kumar
- Department: Center for SemiochemicalsInstitution: Indian Institute of Chemical Technology Address 1 CSIR- Indian Institute of Chemical Technology Hyderabad -500007 India
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4
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Murakoshi S, Hosokawa S. Synthesis of C3-C21 Segment of Aflastatin A Using Remote Asymmetric Induction Reactions. Org Lett 2019; 21:758-761. [PMID: 30632762 DOI: 10.1021/acs.orglett.8b04008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The C3-C21 segment of aflastatin A has been synthesized by converging three segments including the C3-C8 segment, the C9-C15 segment, and the C16-C21 segment. Each segment has been synthesized from a vinylketene silyl N,O-acetal possessing a chiral auxiliary by a wide-range stereocontrol strategy. The C3-C8 segment was constructed in seven steps including the stereoselective vinylogous Mukaiyama alkylation, while the C9-C15 segment and the C16-C21 segment were synthesized using the vinylogous Mukaiyama aldol reaction in seven and eight steps, respectively.
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Affiliation(s)
- Sawato Murakoshi
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University , 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Seijiro Hosokawa
- Department of Applied Chemistry, Faculty of Science and Engineering , Waseda University , 3-4-1 Ohkubo , Shinjuku-ku, Tokyo 169-8555 , Japan
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5
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Abstract
Diverse structural types of natural products and their mimics have served as targets of opportunity in our laboratory to inspire the discovery and development of new methods and strategies to assemble polyfunctional and polycyclic molecular architectures. Furthermore, our efforts toward identifying novel compounds having useful biological properties led to the creation of new targets, many of which posed synthetic challenges that required the invention of new methodology. In this Perspective, selected examples of how we have exploited a diverse range of natural products and their mimics to create, explore, and solve a variety of problems in chemistry and biology will be discussed. The journey was not without its twists and turns, but the unexpected often led to new revelations and insights. Indeed, in our recent excursion into applications of synthetic organic chemistry to neuroscience, avoiding the more-traveled paths was richly rewarding.
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Affiliation(s)
- Stephen F Martin
- Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
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6
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Zhang Z, Xue N, Bian C, Yan R, Jin L, Chen X, Yu X. C15-methoxyphenylated 18-deoxy-herbimycin A analogues, their in vitro anticancer activity and heat shock protein 90 binding affinity. Bioorg Med Chem Lett 2016; 26:4287-91. [PMID: 27476419 DOI: 10.1016/j.bmcl.2016.07.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 07/11/2016] [Accepted: 07/19/2016] [Indexed: 11/30/2022]
Abstract
Benzoquinone ansamycins are important leads for the discovery of novel inhibitors of heat shock protein 90 (Hsp90), a promising target of cancer chemotherapeutics. Intrinsic hepatotoxicity caused by the benzoquinone moiety appeared to be a serious limitation to the development of these compounds. To solve this problem by rational structure optimization, a short series of C18-deoxy analogues of herbimycin A were designed based on putative interactions between the compound and the protein. Chemical synthesis of the target molecules were attempted by following the established synthetic route to the natural product, but resulted in the isolation of four serendipitous C15 phenylated final products. In vitro antiproliferative activity and Hsp90 binding affinity of the compounds were determined, suggesting the C18-oxygen of herbimycin A is removable and bulky lipophilic groups can be accommodated at C15 without loss of activity.
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Affiliation(s)
- Zhi Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Nina Xue
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Chuancai Bian
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Rui Yan
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Longlong Jin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Xiaoguang Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China.
| | - Xiaoming Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, No. 1 Xiannongtan Street, Beijing 100050, China.
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7
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Abstract
Benzoquinone ansamycin antibiotic herbimycin A was synthesized in 19 linear steps and 4.2% yield. Highlighted is the design of a chiral γ-lactone as the C11-C15 synthon that enabled a facile catalytic asymmetric synthesis of the challenging C8-C20 fragment of the target molecule. The easy access to the stereogenic centers and high overall yield made the strategy applicable in the molecular editing of benzoquinone ansamycins.
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Affiliation(s)
- Rui Yan
- State Key Laboratory of Bioactive Substance and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences , No. 1 Xiannongtan Street, Beijing 100050, China
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8
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Kitson RRA, Moody CJ. Learning from nature: advances in geldanamycin- and radicicol-based inhibitors of Hsp90. J Org Chem 2013; 78:5117-41. [PMID: 23496136 DOI: 10.1021/jo4002849] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Natural products have been fundamental in the development of new therapeutic agents predicated on the inhibition of heat shock protein 90 (Hsp90). This Perspective describes the influential role of the benzoquinone ansamycin geldanamycin and the resorcylic acid macrolactone radicicol not only in driving forward drug discovery programs but also in inspiring organic chemists to develop innovative methodology for the synthesis of natural products and analogues with improved properties.
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Affiliation(s)
- Russell R A Kitson
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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Hampel T, Neubauer T, van Leeuwen T, Bach T. Stereoselective Preparation of (E)-Configured 1,2-Disubstituted Propenes from Two Aldehydes by a Two-Carbon Stitching Strategy: Convergent Synthesis of 18,21-Diisopropyl-Geldanamycin Hydroquinone and Its C7 Epimer. Chemistry 2012; 18:10382-92. [DOI: 10.1002/chem.201201600] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Indexed: 11/07/2022]
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11
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Abstract
An enantioselective synthesis of the Hsp90 inhibitor geldanamycin was achieved in 20 linear steps and 2.0% overall yield from 2-methoxyhydroquinone. The synthesis is highlighted by a regio- and stereoselective hydroboration reaction; a Sc(OTf)(3)/Et(3)SiH-mediated pyran ring-opening reaction; an enantioselective crotylation to simultaneously install the C8-C9 (E) -trisubstituted olefin, the C10 and C11 stereocenters; a chelation-controlled asymmetric metallated acetylide addition; and an intramolecular copper(I)-mediated aryl amidation reaction to close the 19-membered macrolactam.
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Affiliation(s)
- Hua-Li Qin
- Department of Chemistry and Center for Chemical Methodology and Library Development, Metcalf Center for Science and Engineering, Boston University, Boston, MA 02215, USA
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13
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Abstract
[structure: see text] Hsp90 has recently emerged as a promising biological target for treatment of cancer. Herbimycin A and other members of the benzoquinoid ansamycin class of natural products are known to inhibit Hsp90 activity. The total synthesis of herbimycin A was achieved from the commercially available Roche ester 1 by using allylmetals to control the stereogenic centers at C6, C7, C10, C11, and C12 and a ring-closing metathesis to control the (Z)-double bond of the (E,Z)-dienic moiety.
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Affiliation(s)
- Sophie Canova
- Laboratoire de Chimie Organique, associé au CNRS, ESPI, 10 rue Vauquelin, 75231 Paris Cedex 05, France
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Schneekloth JS, Crews CM. Chemical approaches to controlling intracellular protein degradation. Chembiochem 2005; 6:40-6. [PMID: 15532104 PMCID: PMC2556563 DOI: 10.1002/cbic.200400274] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2004] [Indexed: 11/08/2022]
Affiliation(s)
- John S. Schneekloth
- Departments of Molecular, Cellular, and Developmental Biology, Chemistry, and Pharmacology, Yale University, New Haven, CT 06520 (USA), Fax: (+1) 20-432-6161
| | - Craig M. Crews
- Departments of Molecular, Cellular, and Developmental Biology, Chemistry, and Pharmacology, Yale University, New Haven, CT 06520 (USA), Fax: (+1) 20-432-6161
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15
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Abstract
[structure: see text] Herbimycin A (HA) belongs to a class of antibiotics known as the benzoquinoid ansamycins. Members of this class have shown promising biological activity as Hsp90 inhibitors. An enantioselective synthesis of HA is described, employing asymmetric syn-crotylation methodology to introduce the C10, C11, C14, and C15 stereocenters. The C6-C7 stereocenters were introduced using Brown's alpha-pinene-derived gamma-methoxy allylborane reagent. The C12 stereocenter was established by diastereoselective hydroboration.
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Affiliation(s)
- Kendra D Carter
- Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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16
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Martin SF, Limberakis C, Burgess LE, Hartmann M. Strategies for ansamycin antibiotics. asymmetric synthesis of the C(3)–C(21) subunit of herbimycin A. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(98)01163-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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The first total synthesis of calbistrin A, a microbial product possessing multiple bioactivities. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(96)02377-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Martin SF, Dodge JA, Burgess LE, Limberakis C, Hartmann M. Novel approach to the ansamycin antibiotics macbecin I and herbimycin A. A formal total synthesis of (+)-macbecin I. Tetrahedron 1996. [DOI: 10.1016/0040-4020(95)01107-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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