期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.202301011
关键词
Cyclic aminal; Tetrahydroquinazoline; Benzosulfamidate; Asymmetric organocatalysis; [4+2]-Cycloaddition
This study describes a novel method for synthesizing benzosulfamidate-fused tetrahydroquinazolines. The desired compounds were obtained through cycloaddition and organocatalytic reactions, enabling the synthesis of chiral ring-fused tetrahydroquinazolines. These compounds have significant application value in biological and pharmaceutical research.
Ring-fused aminal is an interesting structural skeleton in biologically active and pharmaceutically relevant compounds. A novel and efficient method for synthesizing benzosulfamidate-fused tetrahydroquinazolines is described. By employing the [4+2]-cycloaddition of 2-aminophenyl enones with cyclic N-sulfimines in the presence of DMAP as a base, the desired benzosulfamidate-fused tetrahydroquinazolines were obtained in good yields with high diastereoselectivities. Furthermore, an organocatalytic asymmetric [4+2]-cycloaddition was successfully achieved using a squaramide-based catalyst, enabling the enantioselective synthesis of chiral ring-fused tetrahydroquinazolines with high yields and enantio- as well as diastereoselectivities (up to 89 % yield, 94 % ee, and >30 : 1 dr).
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