1
|
Sugano M, Inokuma T, Yamaoka Y, Yamada KI. 5- exo-Selective asymmetric bromolactonization of stilbenecarboxylic acids catalyzed by phenol-bearing chiral thiourea. Org Biomol Chem 2024; 22:1765-1769. [PMID: 38099597 DOI: 10.1039/d3ob01895d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
We developed a novel thiourea Lewis-base catalyst with phenol moieties for the enantioselective 5-exo-bromolactonization of stilbenecarboxylic acids to afford chiral 3-substituted phthalides. The phenol moieties are crucial for the enantio- and regio-selectivity.
Collapse
Affiliation(s)
- Masayuki Sugano
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan.
| | - Tsubasa Inokuma
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan.
- Research Cluster on "Key Material Development, " Tokushima University, Shomachi, Tokushima 770-8505, Japan
| | - Yousuke Yamaoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Ken-Ichi Yamada
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan.
- Research Cluster on "Key Material Development, " Tokushima University, Shomachi, Tokushima 770-8505, Japan
| |
Collapse
|
2
|
Inokuma T, Masui K, Fukuhara K, Yamada KI. Preparation of N-2-Nitrophenylsulfenyl Imino Peptides and Their Catalyst-Controlled Diastereoselective Indolylation. Chemistry 2023; 29:e202203120. [PMID: 36369610 DOI: 10.1002/chem.202203120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/13/2022]
Abstract
N-2-Nitrophenylsulfenyl imino dipeptides bearing various functional groups were successfully prepared by MnO2 -mediated oxidation and then subjected to diastereoselective indolylation. Each diastereomer of the adduct was selectively obtained from the same substrates using the appropriate chiral phosphoric acid catalysts. These transformations would be useful for synthesizing non-canonical amino acid-containing peptides as novel drug candidates.
Collapse
Affiliation(s)
- Tsubasa Inokuma
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, Japan.,Research Cluster on "Key Material Development", Tokushima University, 1-78-1 Shomachi, Tokushima, Japan
| | - Kana Masui
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, Japan
| | - Koki Fukuhara
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, Japan
| | - Ken-Ichi Yamada
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, Japan.,Research Cluster on "Key Material Development", Tokushima University, 1-78-1 Shomachi, Tokushima, Japan
| |
Collapse
|
3
|
Yamada KI, Yamauchi A, Fujiwara T, Hashimoto K, Wang Y, Kuwano S, Inokuma T. Kinetic Resolution of α‐Hydroxyamide via N‐Heterocyclic Carbene‐Catalyzed Acylation. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ken-ichi Yamada
- Tokushima University Graduate School of Pharmaceutical Sciences Shomachi 770-8505 Tokushima JAPAN
| | - Akiho Yamauchi
- University of Tokushima: Tokushima Daigaku Graduate School of Pharmaceutical Sciences JAPAN
| | - Tatsuya Fujiwara
- University of Tokushima: Tokushima Daigaku Graduate School of Pharmaceutical Sciences JAPAN
| | - Keiji Hashimoto
- University of Tokushima: Tokushima Daigaku Graduate School of Pharmaceutical Sciences JAPAN
| | - Yinli Wang
- University of Tokushima: Tokushima Daigaku Graduate School of Pharmaceutical Sciences JAPAN
| | - Satoru Kuwano
- Kyoto University: Kyoto Daigaku Graduate School of Pharmaceutical Sciences JAPAN
| | - Tsubasa Inokuma
- University of Tokushima: Tokushima Daigaku Graduate School of Pharmaceutical Sciences JAPAN
| |
Collapse
|
4
|
Wang Y, Yamauchi A, Hashimoto K, Fujiwara T, Inokuma T, Mitani Y, Ute K, Kuwano S, Yamaoka Y, Takasu K, Yamada KI. Enhanced Molecular Recognition through Substrate–Additive Complex Formation in N-Heterocyclic-Carbene-Catalyzed Kinetic Resolution of α-Hydroxythioamides. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yinli Wang
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Akiho Yamauchi
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan
| | - Keiji Hashimoto
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan
| | - Tatsuya Fujiwara
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan
| | - Tsubasa Inokuma
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan
- Research Cluster on “Innovative Chemical Sensing”, Tokushima University,
Shomachi, Tokushima 770-8505, Japan
| | - Yuta Mitani
- Department of Applied Chemistry, Tokushima University, Minamijosanjima, Tokushima 770-8506, Japan
| | - Koichi Ute
- Department of Applied Chemistry, Tokushima University, Minamijosanjima, Tokushima 770-8506, Japan
| | - Satoru Kuwano
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yousuke Yamaoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Ken-ichi Yamada
- Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan
- Research Cluster on “Innovative Chemical Sensing”, Tokushima University,
Shomachi, Tokushima 770-8505, Japan
| |
Collapse
|
5
|
Yamasaki K, Yamauchi A, Inokuma T, Miyakawa Y, Wang Y, Oriez R, Yamaoka Y, Takasu K, Tanaka N, Kashiwada Y, Yamada K. Mechanistic Support for Intramolecular Migrative Cyclization of Propargyl Sulfones Provided by Catalytic Asymmetric Induction with a Chiral Counter Cation Strategy. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kohta Yamasaki
- Graduate School of Pharmaceutical Sciences Tokushima University Shomachi, Tokushima 770-8505 Japan
| | - Akiho Yamauchi
- Graduate School of Pharmaceutical Sciences Tokushima University Shomachi, Tokushima 770-8505 Japan
| | - Tsubasa Inokuma
- Graduate School of Pharmaceutical Sciences Tokushima University Shomachi, Tokushima 770-8505 Japan
- Research Cluster on “Innovative Chemical Sensing” Tokushima University Shomachi, Tokushima 770-8505 Japan
| | - Yasunori Miyakawa
- Graduate School of Pharmaceutical Sciences Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501 Japan
| | - Yinli Wang
- Graduate School of Pharmaceutical Sciences Tokushima University Shomachi, Tokushima 770-8505 Japan
- Graduate School of Pharmaceutical Sciences Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501 Japan
| | - Raphaël Oriez
- Graduate School of Pharmaceutical Sciences Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501 Japan
| | - Yousuke Yamaoka
- Graduate School of Pharmaceutical Sciences Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501 Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501 Japan
| | - Naonobu Tanaka
- Graduate School of Pharmaceutical Sciences Tokushima University Shomachi, Tokushima 770-8505 Japan
| | - Yoshiki Kashiwada
- Graduate School of Pharmaceutical Sciences Tokushima University Shomachi, Tokushima 770-8505 Japan
| | - Ken‐ichi Yamada
- Graduate School of Pharmaceutical Sciences Tokushima University Shomachi, Tokushima 770-8505 Japan
- Research Cluster on “Innovative Chemical Sensing” Tokushima University Shomachi, Tokushima 770-8505 Japan
| |
Collapse
|
6
|
Inokuma T, Sakakibara T, Someno T, Masui K, Shigenaga A, Otaka A, Yamada KI. Asymmetric Synthesis of α-Amino Phosphonic Acids using Stable Imino Phosphonate as a Universal Precursor. Chemistry 2019; 25:13829-13832. [PMID: 31449339 DOI: 10.1002/chem.201903572] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Indexed: 01/02/2023]
Abstract
A practical method for synthesizing chiral α-amino phosphonic acid derivatives was developed. Readily available and stable N-o-nitrophenylsulfenyl (Nps) imino phosphonate was utilized as a substrate for a highly enantioselective Friedel-Crafts-type addition of indole or pyrrole nucleophiles catalyzed by chiral phosphoric acid. The resulting adduct was easily converted into N-9-fluorenylmethyloxycarbonyl (Fmoc) amino phosphonic acid, which is useful for synthesizing peptides containing an amino phosphonic acid.
Collapse
Affiliation(s)
- Tsubasa Inokuma
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Takuya Sakakibara
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Takatoshi Someno
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Kana Masui
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Akira Shigenaga
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Akira Otaka
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| | - Ken-Ichi Yamada
- Graduate School of Pharmaceutical Sciences, Tokushima University, Tokushima, 770-8505, Japan
| |
Collapse
|