827-46-3Relevant articles and documents
Enantioselective Construction of Spiro[chroman-thiazolones]: Bifunctional Phosphonium Salt-Catalyzed [2+4] Annulation between 5-Alkenyl Thiazolones and ortho-Hydroxyphenyl-Substituted para-Quinone Methides
Tan, Jian-Ping,Zhang, Hongkui,Jiang, Zhiyu,Chen, Yuan,Ren, Xiaoyu,Jiang, Chunhui,Wang, Tianli
supporting information, p. 1058 - 1063 (2020/01/02)
The enantioselective formal [2+4] annulation of 5-alkenyl thiazolones with hydroxyl-substituted para-quinone methides was disclosed by dipeptide-based phosphonium salt catalysts. A wide range of functionalized spiro-chroman-thiazolone molecules bearing three contiguous 3° and/or 4° stereocenters were readily constructed in high yields with excellent stereoselectivities (>20:1 dr and up to >99.9% ee) under low catalyst loading and mild reaction conditions. The practicality and utility of this protocol were demonstrated by the scaled-up preparation and elaborations of product. (Figure presented.).
Thiazolo [2,3-b] oxazolone compound and preparation method and application thereof
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Paragraph 0084-0086, (2019/12/10)
The invention provides a compound shown in a formula I, or a salt thereof, or a stereoisomer thereof; R1 is selected from 3 and 8-element unsaturated cycloalkyl and 3 and 8-element unsaturated heterocyclic group; R2 is selected from hydrogen, C1-C8 alkyl
Crystal form of dihydropyranothiazole compound and preparation method thereof
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Paragraph 0024-0025, (2018/04/03)
The invention provides a crystal form I of a compound shown by formula (A). The crystal form I is characterized in that the crystal form is a triclinic system, wherein the space group is P1, and the cell parameters are shown in the description. The invent