|
1
|
Sugimoto M, Nosho S, Hikosaka G, Hattori Y, Umezawa K, Kawamura A, Makabe H. Synthesis of (+)-Muconin via Diastereoselective Oxypalladation. J Org Chem 2021; 86:4859-4866. [PMID: 33667103 DOI: 10.1021/acs.joc.0c02831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthesis of (+)-muconin isolated from Rollinia mucosa (Annonaceae) was achieved. Stereoselective construction of a tetrahydrofuran-terahydropyran (THF-THP) ring moiety was performed using diastereoselective oxypalladation in the presence of CuCl2. The cross-coupling reaction of the THF-THP moiety with the γ-lactone portion followed by reduction of the enyne and removal of the protecting groups afforded (+)-muconin.
Collapse
Affiliation(s)
- Makoto Sugimoto
- Graduate School of Science and Technology, Department of Agriculture, Division of Food Science and Biotechnology, Shinshu University, 8304 minami-minowa, Kami-ina, Nagano 399-4598, Japan
| | - Sayaka Nosho
- Graduate School of Science and Technology, Department of Agriculture, Division of Food Science and Biotechnology, Shinshu University, 8304 minami-minowa, Kami-ina, Nagano 399-4598, Japan
| | - Gen Hikosaka
- Graduate School of Agriculture, Sciences of Functional Foods, Shinshu University, 8304 minami-minowa, Kami-ina, Nagano 399-4598, Japan
| | - Yasunao Hattori
- Center for Instrumental Analysis, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8412, Japan
| | - Koji Umezawa
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Minami-minowa, Kami-ina, Nagano 399-4598, Japan
| | - Atsushi Kawamura
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Minami-minowa, Kami-ina, Nagano 399-4598, Japan
| | - Hidefumi Makabe
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Minami-minowa, Kami-ina, Nagano 399-4598, Japan
| |
Collapse
|
|
2
|
Zhao H, Gao K, Ma H, Yip TC, Dai WM. Synthesis of the C19–C30 bis-THF fragment of iriomoteolide-13a via stepwise S N2 cyclization and intramolecular syn-oxypalladation. Org Chem Front 2021. [DOI: 10.1039/d1qo01049b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The bis-THF subunit of iriomoteolide-13a was stereoselectively constructed from the non-protected ene triol via syn-oxypalladation with excellent atom efficiency.
Collapse
Affiliation(s)
- Hui Zhao
- Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), and Laboratory of Advanced Catalysis and Synthesis, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
| | - Kai Gao
- Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), and Laboratory of Advanced Catalysis and Synthesis, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. China
| | - Haichen Ma
- Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), and Laboratory of Advanced Catalysis and Synthesis, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
| | - Tsz Chun Yip
- Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), and Laboratory of Advanced Catalysis and Synthesis, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
| | - Wei-Min Dai
- Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), and Laboratory of Advanced Catalysis and Synthesis, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
| |
Collapse
|
|
3
|
Abstract
Herein, we report for the first time the design and linear synthesis of a truncated calyculone H (7) that lacks the telltale isopropyl/isopropylene groups, whereas the 12-membered macrocycle remains intact. Key steps for the framework of target molecule include allylic oxidation using SeO2, Sharpless asymmetric epoxidation, Barbier zinc allylation, and ring-closing metathesis (RCM) reactions. A second truncated "calyculone-like" analogue, 27, with a different oxidation pattern around the ring was also synthesized following a similar strategy. Screening for in vitro cytotoxicity against a panel of 60 human cancer cell lines revealed that 7 was as potent if not more so (for a few cell lines) than the natural product calyculone A (2).
Collapse
Affiliation(s)
- Penagaluri Balasubramanyam
- Department of Chemistry, University of Puerto Rico, P.O. Box 23346, U.P.R. Station, San Juan, Puerto Rico 00931-3346, United States
| | - Abimael D Rodríguez
- Department of Chemistry, University of Puerto Rico, P.O. Box 23346, U.P.R. Station, San Juan, Puerto Rico 00931-3346, United States
| |
Collapse
|
|
4
|
Suzuki A, Sasaki M, Nakagishi T, Ueda T, Hoshiya N, Uenishi J. Construction of Iterative Tetrahydrofuran Ring Units and Total Synthesis of (+)-Goniocin. Org Lett 2016; 18:2248-51. [PMID: 27111729 DOI: 10.1021/acs.orglett.6b00877] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cytotoxic acetogenin (+)-goniocin has been synthesized in 17 steps from (R)-O-tritylglycidol. The core structure of the contiguous C22-C10 threo-trans-threo-trans-threo-trans-tris-tetrahydrofuran (THF) ring involving an iterative THF-ring unit was synthesized. An iterative THF ring unit was constructed from an alkenyl-substituted THF ring in four steps including a Pd(II)-catalyzed ring-closing reaction and cross-metathesis. This method is general and allows the preparation of both trans-threo-trans- and trans-threo-cis-THF ring units flexibly.
Collapse
Affiliation(s)
- Ai Suzuki
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | - Mai Sasaki
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | | | - Tsuyoshi Ueda
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | - Naoyuki Hoshiya
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | - Jun'ichi Uenishi
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| |
Collapse
|
|
5
|
The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2013. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|