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Takasu K, Shigenaga K, Shimoda K, Takikawa H, Yamaoka Y. Synthesis of Lactone-Fused Cyclopropanes by Ring Contractive α-Ketol Rearrangement of Ketal-Fused Cyclobutanones. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
This review covers diastereo- and enantiodivergent catalyzed reactions in acyclic and cyclic systems using metal complexes or organocatalysts. Among them, nucleophilic addition to carbon-carbon and carbon-nitrogen double bonds, α-functionalization of carbonyl compounds, allylic substitutions, and ring opening of oxiranes and aziridines are considered. The diastereodivergent synthesis of alkenes from alkynes is also included. Finally, stereodivergent intramolecular and intermolecular cycloadditions and other cyclizations are also reported.
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Affiliation(s)
- Irina P Beletskaya
- Chemistry Department , M. V. Lomonosov Moscow State University , Leninskie Gory 1 , 119992 Moscow , Russia
| | - Carmen Nájera
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Alicante , Apdo. 99 , E-03080 Alicante , Spain
| | - Miguel Yus
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Alicante , Apdo. 99 , E-03080 Alicante , Spain
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Arichi N, Fujiwara S, Ishizawa M, Makishima M, Hua DH, Yamada KI, Yamaoka Y, Takasu K. Synthesis and biological evaluation of steroidal derivatives bearing a small ring as vitamin D receptor agonists. Bioorg Med Chem Lett 2017; 27:3408-3411. [PMID: 28610979 DOI: 10.1016/j.bmcl.2017.05.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 05/30/2017] [Accepted: 05/31/2017] [Indexed: 10/19/2022]
Abstract
A novel series of 3-ketolithocholic acid derivatives as well as estrone derivatives bearing a small ring for the conformational fixation of the side chain were synthesized by using a catalytic [2+2] cycloaddition and a ring-contraction rearrangement. The steroidal derivatives were evaluated for transcriptional activation of vitamin D receptor by luciferase reporter assays. Among them, two estrone derivatives showed a higher efficacy of the transactivation of vitamin D receptor than 3-ketolithocholic acid, and the small ring moieties were found to be important for the efficacy.
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Affiliation(s)
- Norihito Arichi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinichi Fujiwara
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Michiyasu Ishizawa
- Division of Biochemistry, Department of Biomedical Sciences, School of Medicine, Nihon University, Itabashi-ku, Tokyo 173-8610, Japan
| | - Makoto Makishima
- Division of Biochemistry, Department of Biomedical Sciences, School of Medicine, Nihon University, Itabashi-ku, Tokyo 173-8610, Japan
| | - Duy H Hua
- Department of Chemistry, Kansas State University, Manhattan, KS 66506-0401, USA
| | - Ken-Ichi Yamada
- 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.
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Yamaoka Y, Ueda M, Yamashita T, Shimoda K, Yamada KI, Takasu K. Synthesis of multi-substituted cyclobutenes: Cyclic strategy for [2 + 2] cycloaddition of ketene silyl acetals with propiolates. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Yamano R, Hara J, Murayama K, Sugiyama H, Teraoka K, Uekusa H, Kawauchi S, Shibata Y, Tanaka K. Rh-Mediated Enantioselective Synthesis, Crystal Structures, and Photophysical/Chiroptical Properties of Phenanthrenol-Based [9]Helicene-like Molecules. Org Lett 2016; 19:42-45. [DOI: 10.1021/acs.orglett.6b03279] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Jun Hara
- Department
of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | | | | | | | | | | | | | - Ken Tanaka
- Department
of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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Takasu K. Synthesis of Multisubstituted Silyloxy-based Donor-Acceptor Cyclobutanes by an Acid-Catalyzed [2+2] Cycloaddition. Isr J Chem 2016. [DOI: 10.1002/ijch.201500096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences; Kyoto University; Yoshida, Sakyo-ku Kyoto 606-8501 Japan
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