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Hur J, Jang J, Sim J, Son WS, Ahn HC, Kim TS, Shin YH, Lim C, Lee S, An H, Kim SH, Oh DC, Jo EK, Jang J, Lee J, Suh YG. Conformation-Enabled Total Syntheses of Ohmyungsamycins A and B and Structural Revision of Ohmyungsamycin B. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711286] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Joonseong Hur
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
| | - Jaebong Jang
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
| | - Jaehoon Sim
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
- College of Pharmacy; CHA University; 120 Haeryong-ro Pocheon Gyeonggi-do 11160 Republic of Korea
| | - Woo Sung Son
- College of Pharmacy; CHA University; 120 Haeryong-ro Pocheon Gyeonggi-do 11160 Republic of Korea
| | - Hee-Chul Ahn
- Department of Pharmacy; Dongguk University; Dongguk-ro 32 Ilsandong-gu, Goyang Geonggi-do 10326 Republic of Korea
| | - Tae Sung Kim
- Department of Microbiology; Chungnam National University School of Medicine; Munhwa-ro 266 Jungku Daejeon 35015 Republic of Korea
| | - Yern-Hyerk Shin
- Natural Products Research Institute; College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
| | - Changjin Lim
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
- College of Pharmacy; CHA University; 120 Haeryong-ro Pocheon Gyeonggi-do 11160 Republic of Korea
| | - Seungbeom Lee
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
| | - Hongchan An
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
| | - Seok-Ho Kim
- College of Pharmacy; CHA University; 120 Haeryong-ro Pocheon Gyeonggi-do 11160 Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute; College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
| | - Eun-Kyeong Jo
- Department of Microbiology; Chungnam National University School of Medicine; Munhwa-ro 266 Jungku Daejeon 35015 Republic of Korea
| | - Jichan Jang
- Division of Applied Life Science; Research Institute of Life Science; Gyeongsang National University; Jinju 52828 Republic of Korea
| | - Jeeyeon Lee
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
| | - Young-Ger Suh
- College of Pharmacy; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Republic of Korea
- College of Pharmacy; CHA University; 120 Haeryong-ro Pocheon Gyeonggi-do 11160 Republic of Korea
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Hur J, Jang J, Sim J, Son WS, Ahn HC, Kim TS, Shin YH, Lim C, Lee S, An H, Kim SH, Oh DC, Jo EK, Jang J, Lee J, Suh YG. Conformation-Enabled Total Syntheses of Ohmyungsamycins A and B and Structural Revision of Ohmyungsamycin B. Angew Chem Int Ed Engl 2018; 57:3069-3073. [PMID: 29380472 DOI: 10.1002/anie.201711286] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/28/2017] [Indexed: 01/06/2023]
Abstract
The first total syntheses of the bioactive cyclodepsipeptides ohmyungsamycin A and B are described. Key features of our synthesis include the concise preparation of a linear cyclization precursor that consists of N-methyl amides and non-proteinogenic amino acids, and its macrolactamization from a bent conformation. The proposed structure of ohmyungsamycin B was revised based on its synthesis. The cyclic core of the ohmyungsamycins was shown to be responsible for the excellent antituberculosis activity, and ohmyungsamycin variants with truncated chains were evaluated for their biological activity.
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Affiliation(s)
- Joonseong Hur
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jaebong Jang
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jaehoon Sim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.,College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon, Gyeonggi-do, 11160, Republic of Korea
| | - Woo Sung Son
- College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon, Gyeonggi-do, 11160, Republic of Korea
| | - Hee-Chul Ahn
- Department of Pharmacy, Dongguk University, Dongguk-ro 32, Ilsandong-gu, Goyang, Geonggi-do, 10326, Republic of Korea
| | - Tae Sung Kim
- Department of Microbiology, Chungnam National University School of Medicine, Munhwa-ro 266, Jungku, Daejeon, 35015, Republic of Korea
| | - Yern-Hyerk Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Changjin Lim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.,College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon, Gyeonggi-do, 11160, Republic of Korea
| | - Seungbeom Lee
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Hongchan An
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seok-Ho Kim
- College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon, Gyeonggi-do, 11160, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Eun-Kyeong Jo
- Department of Microbiology, Chungnam National University School of Medicine, Munhwa-ro 266, Jungku, Daejeon, 35015, Republic of Korea
| | - Jichan Jang
- Division of Applied Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jeeyeon Lee
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Young-Ger Suh
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.,College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon, Gyeonggi-do, 11160, Republic of Korea
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3
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Sharma A, Ramos‐Tomillero I, El‐Faham A, Nicolas E, Rodriguez H, de la Torre BG, Albericio F. Understanding Tetrahydropyranyl as a Protecting Group in Peptide Chemistry. ChemistryOpen 2017; 6:168-177. [PMID: 28413747 PMCID: PMC5390806 DOI: 10.1002/open.201600156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 12/17/2016] [Indexed: 11/19/2022] Open
Abstract
Tetrahydropyranyl (Thp) is recognized as a useful protecting group for alcohols in organic synthesis. It has several advantages, including low cost, ease of introduction, general stability to most non-acidic reagents, it confers good solubility, and the ease with which it can be removed if the functional group it protects requires manipulation. However, little attention has been paid to Thp in peptide chemistry. Provided here is a concise analysis of the Thp protection of various amino acid functionalities (OH, SH, NH and COOH) and its application to peptide synthesis. Thp is a useful moiety for the side-chain protection of serine, threonine and cysteine and is suitable for the Fmoc/tBu solid-phase peptide synthesis strategy. The immobilized version of 3,4-dihydro-2H-pyran, the so-called Ellman resin, is also discussed as a useful solid support for anchoring the side chains of serine, threonine and tryptophan residues.
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Affiliation(s)
- Anamika Sharma
- Catalysis and Peptide Research UnitSchool of Health SciencesUniversity of KwaZulu-NatalDurban4001South Africa
| | - Iván Ramos‐Tomillero
- Inorganic and Organic Chemistry DepartmentUniversity of BarcelonaMartí Franqués 1—1108028BarcelonaSpain
| | - Ayman El‐Faham
- Department of ChemistryCollege of ScienceKing Saud UniversityP.O. Box 2455Riyadh11451Saudi Arabia
- Department of ChemistryFaculty of ScienceAlexandria UniversityP.O. Box 426, IbrahimiaAlexandria21321Egypt
| | - Ernesto Nicolas
- Inorganic and Organic Chemistry DepartmentUniversity of BarcelonaMartí Franqués 1—1108028BarcelonaSpain
| | | | - Beatriz G. de la Torre
- Catalysis and Peptide Research UnitSchool of Health SciencesUniversity of KwaZulu-NatalDurban4001South Africa
- School of Laboratory of Medicine & Medical SciencesUniversity of KwaZulu-NatalDurban4001South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research UnitSchool of Health SciencesUniversity of KwaZulu-NatalDurban4001South Africa
- Inorganic and Organic Chemistry DepartmentUniversity of BarcelonaMartí Franqués 1—1108028BarcelonaSpain
- Department of ChemistryCollege of ScienceKing Saud UniversityP.O. Box 2455Riyadh11451Saudi Arabia
- School of Chemistry & PhysicsUniversity of KwaZulu-NatalDurban4001South Africa
- CIBER-BBN, Networking Centre on BioengineeringBiomaterials and NanomedicineBarcelona Science ParkBaldiri Reixac 10—1208028BarcelonaSpain
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4
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Sharma A, Ramos‐Tomillero I, El‐Faham A, Rodríguez H, de la Torre BG, Albericio F. Tetrahydropyranyl: A Non-aromatic, Mild-Acid-Labile Group for Hydroxyl Protection in Solid-Phase Peptide Synthesis. ChemistryOpen 2017; 6:206-210. [PMID: 28413752 PMCID: PMC5390794 DOI: 10.1002/open.201600157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 12/12/2016] [Indexed: 11/30/2022] Open
Abstract
The use of the tetrahydropyranyl (Thp) group for the protection of serine and threonine side-chain hydroxyl groups in solid-phase peptide synthesis has not been widely investigated. Ser/Thr side-chain hydroxyl protection with this acid-labile and non-aromatic moiety is presented here. Although Thp reacts with free carboxylic acids, it can be concluded that to introduce Thp ethers at the hydroxyl groups of N-protected Ser and Thr, protection of the C-terminal carboxyl group is unnecessary due to the lability of Thp esters. Thp-protected Ser/Thr-containing tripeptides are synthesized and the removal of Thp studied in low concentrations of trifluoroacetic acid in the presence of cation scavengers. Given its general stability to most non-acidic reagents, improved solubility of its conjugates and ease with which it can be removed, Thp emerges as an effective protecting group for the hydroxyl groups of Ser and Thr in solid-phase peptide synthesis.
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Affiliation(s)
- Anamika Sharma
- Catalysis and Peptide Research UnitSchool of Health SciencesUniversity of KwaZulu-NatalDurban4001South Africa
| | - Iván Ramos‐Tomillero
- Inorganic and Organic DepartmentUniversity of BarcelonaMartí Franqués 1–1108028BarcelonaSpain
| | - Ayman El‐Faham
- Department of ChemistryCollege of ScienceKing Saud UniversityP.O. Box 2455Riyadh11451Saudi Arabia
- Department of ChemistryFaculty of ScienceAlexandria UniversityP.O. Box 426, IbrahimiaAlexandria21321Egypt
| | | | - Beatriz G. de la Torre
- Catalysis and Peptide Research UnitSchool of Health SciencesUniversity of KwaZulu-NatalDurban4001South Africa
- School of Laboratory of Medicine & Medical SciencesUniversity of KwaZulu-NatalDurban4001South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research UnitSchool of Health SciencesUniversity of KwaZulu-NatalDurban4001South Africa
- Inorganic and Organic DepartmentUniversity of BarcelonaMartí Franqués 1–1108028BarcelonaSpain
- Department of ChemistryCollege of ScienceKing Saud UniversityP.O. Box 2455Riyadh11451Saudi Arabia
- School of Chemistry & PhysicsUniversity of KwaZulu-NatalDurban4001South Africa
- CIBER-BBN, Networking Centre on BioengineeringBiomaterials and NanomedicineBarcelona Science ParkBaldiri Reixac 10–1208028BarcelonaSpain
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