期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 144, 期 48, 页码 21848-21852出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c09733
关键词
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资金
- JSPS [17H05430]
- JSPS KAKENHI [17H06173, 22H02742]
- KAKENHI [22H00320]
- JST CREST [JPMJCR19R2]
- AMED DAIIA [JP22nk0101111]
- NAGASE Science Technology Foundation
- Naito Foundation
- Uehara Memorial Foundation
- Mochida Memorial Foundation for Medical and Pharmaceutical Research
- Chugai Foundation
There is growing interest in replacing the planar aromatic rings in drug candidates with three-dimensional caged scaffolds. However, finding bioisosteres of meta-substituted benzenes has been a challenge. In this study, the bicyclo[3.1.1]heptane scaffold was explored as a novel bioisostere, and a practical method for its synthesis was developed.
There is increasing interest in replacement of the planar aromatic rings of drug candidates with three-dimensional caged scaffolds in order to improve the physical properties, but bioisosteres of meta-substituted benzenes have remained elusive. We focused on the bicyclo[3.1.1]heptane (BCH) scaffold as a novel bioisostere of meta-substituted benzenes, anticipating that [3.1.1]propellane (2) would be a versatile precursor of diversely functionalized BCHs. Here, we describe a practical preparative method for [3.1.1]propellane from newly developed 1,5-diiodobicyclo[3.1.1]heptane (1), as well as difunctionalization reactions of 2 leading to functionalized BCHs. We also report postfunctionalization reactions of these products.
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