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Biradar DO, Mane YD, Yadav JS, Subba Reddy BV. Prins cyclization: new strategy for the stereoselective total synthesis of Polyrhacitide A. Nat Prod Res 2023:1-11. [PMID: 38041627 DOI: 10.1080/14786419.2023.2288694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
A highly stereoselective total synthesis of polyrhacitide A, a polyketide natural product, has been accomplished by means of Prins cyclisation. The key precursor i.e. anti-1,3-diol for polyrhacitide A has been prepared from trans-2,6-disubstituted-3,4-dihydropyrans. In this approach, Prins cyclisation has successfully been utilised twice for the construction of 1,3-diol unit of polyrhacitide A. The key steps involved in this approach are Jacobsen hydrolytic kinetic resolution, Mitsunobu inversion, Prins cyclisation and Ring-closing metathesis (RCM).
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Affiliation(s)
- Dhanraj O Biradar
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
- Maharashtra Mahavidyalaya, Nilanga, India
| | | | - Jhillu S Yadav
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
| | - B V Subba Reddy
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
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2
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Saludares C, Ortiz E, Santana CG, Spinello BJ, Krische MJ. Asymmetric Ruthenium-Catalyzed Carbonyl Allylations by Gaseous Allene via Hydrogen Auto-Transfer: 1° vs 2° Alcohol Dehydrogenation for Streamlined Polyketide Construction. ACS Catal 2023; 13:1662-1668. [PMID: 37869365 PMCID: PMC10586519 DOI: 10.1021/acscatal.2c05425] [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] [Indexed: 01/15/2023]
Abstract
Iodide-bound ruthenium-JOSIPHOS complexes catalyze the redox-neutral C-C coupling of primary alcohols 2a-2r with the gaseous allene (propadiene) 1a to form enantiomerically enriched homoallylic alcohols 3a-3r with complete atom-efficiency. Using formic acid as reductant, aldehydes dehydro-2a and dehydro-2c participate in reductive C-C coupling with allene to deliver adducts 3a and 3c with comparable levels of asymmetric induction. Deuterium labeling studies corroborate a mechanism in which alcohol dehydrogenation triggers allene hydroruthenation to form transient allylruthenium-aldehyde pairs that participate in carbonyl addition. Notably, due to a kinetic preference for primary alcohol dehydrogenation, chemoselective C-C coupling of 1°,2°-1,3-diols occurs in the absence of protecting groups. As illustrated by the synthesis of C7-C15 of spirastrellolide B and F (7 vs 17 steps), C3-C10 of cryptocarya diacetate (3 vs 7 or 9 steps), and a fragment common to C8'-C14' of mycolactone F (1 vs 4 steps) and C22-C28 marinomycin A (1 vs 9 steps), this capability streamlines type I polyketide construction.
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Affiliation(s)
- Connor Saludares
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. Austin, TX 78712, USA
| | - Eliezer Ortiz
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. Austin, TX 78712, USA
| | - Cate G Santana
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. Austin, TX 78712, USA
| | - Brian J Spinello
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. Austin, TX 78712, USA
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. Austin, TX 78712, USA
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3
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Biradar DO, Mane YD, Reddy BS, Yadav J. Stereoselective total syntheses of dodoneine and its diastereomer, epidodoneine via Prins cyclisation. Tetrahedron 2023. [DOI: 10.1016/j.tet.2022.133242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Biradar DO, Subba Reddy BV, Mane YD. Stereoselective Synthesis of Euscapholide and Tetraketide via Prins Cyclisation and Ring-Closing Metathesis. SYNOPEN 2022. [DOI: 10.1055/s-0042-1751381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
AbstractA concise and diastereoselective total synthesis of tetraketide and euscapholide is described in ten steps in 10.6% overall yield from acetaldehyde and (S)-pent-4-ene-1,2-diol. Jacobsen hydrolytic kinetic resolution, Prins cyclization, ring-closing metathesis and oxa-Michael addition reactions are the key steps involved in the synthesis.
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Highly Diastereoselective Chelation-Controlled 1,3-anti-Allylation of (S)-3-(Methoxymethyl)hexanal Enabled by Hydrate of Scandium Triflate. Symmetry (Basel) 2021. [DOI: 10.3390/sym13030470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
En route to the total synthesis of (+)-Neopeltolide, we explored Lewis acid-assisted diastereoselective allylation of MOM-protected 3-hydroxylhexanal with β-(2,2-diethoxyethyl)-substituted (allyl)tributylstannane. The hydrated form of scandium triflate was found to be essential for attaining high 1,3-anti-diastereoselectivity (d.r. 94:6), while the use of anhydrous catalyst resulted in a modest diastereocontrol (d.r. 76:24). The preferred 1,3-anti-selectivity in this transformation can be rationalized in the framework of the Reetz chelate model of asymmetric induction. The 1,3-anti-configuration of the product was confirmed by its conversion into the known C7-C16 building block of (+)-Neopeltolide. We also report an improved protocol for the synthesis of β-(2,2-diethoxyethyl)-substituted (allyl)tributylstannane, which can be utilized as a cost-efficient bipolar isoprenoid-type C5-building block in the synthesis of natural compounds.
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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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7
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Della-Felice F, Sarotti AM, Pilli RA. Catalytic Asymmetric Synthesis and Stereochemical Revision of (+)-Cryptoconcatone H. J Org Chem 2017; 82:9191-9197. [DOI: 10.1021/acs.joc.7b01378] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Franco Della-Felice
- University of Campinas, Institute of Chemistry, 13084-971 Campinas, SP, Brazil
| | - Ariel M. Sarotti
- Instituto
de Química Rosario, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha
531, S2002LRK Rosario, Argentina
| | - Ronaldo A. Pilli
- University of Campinas, Institute of Chemistry, 13084-971 Campinas, SP, Brazil
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Reddy RG, Venkateshwarlu R, Ramakrishna KVS, Yadav JS, Mohapatra DK. Asymmetric Total Syntheses of Two Possible Diastereomers of Gliomasolide E and Its Structural Elucidation. J Org Chem 2017; 82:1053-1063. [DOI: 10.1021/acs.joc.6b02611] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ramidi Gopal Reddy
- Academy of Scientific and Innovative Research (AcSIR), Mathura Road, New Delhi 110 025, India
| | | | | | - Jhillu S. Yadav
- Academy of Scientific and Innovative Research (AcSIR), Mathura Road, New Delhi 110 025, India
| | - Debendra K. Mohapatra
- Academy of Scientific and Innovative Research (AcSIR), Mathura Road, New Delhi 110 025, India
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Padhi B, Reddy GS, Mohapatra DK. Total Synthesis of Tetraketide and Cryptorigidifoliol I via a Sequential Allylation Strategy. JOURNAL OF NATURAL PRODUCTS 2016; 79:2788-2796. [PMID: 27933895 DOI: 10.1021/acs.jnatprod.6b00443] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A unified and efficient synthetic route for both tetraketide (1) and cryptorigidifoliol I (2) has been devised successfully from commercially available starting materials in 11 and 17 steps, with 16% and 11% overall yields, respectively. Highlights of the syntheses involved sequential Lewis acid-catalyzed highly regio- and diastereoselective allylations and intramolecular Mitsunobu lactonization.
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Affiliation(s)
- Birakishore Padhi
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500 007, India
- Academy of Scientific and Innovative Research , New Delhi 110025, India
| | - G Sudhakar Reddy
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500 007, India
- Academy of Scientific and Innovative Research , New Delhi 110025, India
| | - Debendra K Mohapatra
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500 007, India
- Academy of Scientific and Innovative Research , New Delhi 110025, India
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Affiliation(s)
| | | | | | - Jhillu Singh Yadav
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
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Abstract
The synthesis of the C9-C25 subunit of the marine natural product spirastrellolide B is reported. The key synthetic features included the union of the two key fragments 5 and 6 via a Suzuki-Miyaura coupling reaction and a late-stage, one-pot sequential deprotection/cascade Achmatowicz rearrangement-spiroketalization to install the key spirocyclic intermediate present in the C9-C25 fragment of spirastrellolide B. The synthesis of the C9-C16 fragment 6 was accomplished via a phosphate tether mediated ring-closing metathesis (RCM), a subsequent hydroboration-oxidation protocol, followed by other stereoselective transformations in a facile manner. The spirocyclic intermediate was further functionalized utilizing a Lindlar/NaBH4 reduction protocol to furnish the C9-C25 subunit 3.
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Affiliation(s)
- Soma Maitra
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States
| | - Mahipal Bodugam
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States
| | - Salim Javed
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States
| | - Paul R Hanson
- Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States
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Lam T, Totah NI. Studies toward the synthesis of spirastrellolide A. Preparation of a C31–C47 model. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.01.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kano T, Maruyama H, Sakamoto R, Maruoka K. Regioselectivity switch in chiral amine-catalysed asymmetric addition of aldehydes to reactive enals. Chem Commun (Camb) 2015; 51:10062-5. [DOI: 10.1039/c5cc02438b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A regioselectivity switch was realized in the chiral amine-catalysed asymmetric addition of aldehydes to reactive enals, and either aldol adducts or conjugate adducts were obtained in a stereoselective fashion.
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Affiliation(s)
- Taichi Kano
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Hiroki Maruyama
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Ryu Sakamoto
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Keiji Maruoka
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
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