102831-92-5Relevant articles and documents
A acylation of the synthesis method of sulfur on behalf of the oxazolidone
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Paragraph 0031; 0032; 0033, (2019/01/08)
The invention discloses a method for acylation of the synthesis method of sulfur on behalf of the oxazolidone. Synthesis method of the invention, comprising the following steps: in the non-protic organic solvent, the compound III and under the action of a
Synthesis and Fungicidal Activity of Simple Structural 1,3-Thiazolidine-2-Thione Derivatives
Chen, Ning,Du, Hongguang,Liu, Weidong,Wang, Shanshan,Li, Xinyao,Xu, Jiaxi
, p. 112 - 122 (2015/10/29)
A series of simple structural 1,3-thiazolidine-2-thione derivatives with various substituents on the S-, N-, 4-, and 5-positions was synthesized with high yields from various vicinal amino alcohols via two steps and screened for their antifungal activity. Bioassay results reveal that some thiazolidine-2-thione derivatives show strong antifungal activities against P. capsici, G. zeae, S. sclerotiorum, A. alternata, B. cinerea, or R. solani. The SAR analysis indicates that N-acyl substituted and 4-alkyl substituents can enhance the antifungal activity. Notably, 4-isopropyl-N-propionylthiazoldine-2-thione shows excellent activity against B. cinerea and G. zeae with IC50 values at 3.7 g/mL and 6.5 g/mL, respectively, and 4-isobutyl-N-propionylthiazoldine-2-thione shows remarkable fungicidal activity against R. solani, S. sclerotiorum, and G. zeae with IC50 values at 1.0 g/mL, 12.1 g/mL, and 11.0 g/mL, respectively. GRAPHICAL ABSTRACT.
Enantioselective synthesis of structurally intricate and complementary polyoxygenated building blocks of spongistatin 1 (altohyrtin a)
Braun, Alain,Cho, Ii Hwan,Ciblat, Stephane,Clyne, Dean,Forgione, Pat,Hart, Amy C.,Huang, Guoxiang,Kim, Jungchul,Modolo, Isabelle,Paquette, Leo A.,Peng, Xiaowen,Pichlmair, Stefan,Stewart, Catherine A.,Wang, Jizhou,Zuev, Dmitry
experimental part, p. 651 - 769 (2010/02/27)
Enantioselective approaches to the construction of four complex building blocks of the structurally intricate marine macrolide known as spongistatin 1 are presented. The first phase of the synthetic effort relies on a practical approach to a desymmetrized, enantiomerically pure spiroketal ring system incorporating rings A and B. Concurrently, the C17-C28 subunit, which houses one-fifth of the stereogenic centers of the target in the form of rings C and D, was assembled via a composite of stereocontrolled aldol condensations. Once arrival at the entire C1-C28 sector had been realized, routes were devised to provide two additional highly functionalized sectors consisting of C29-C44 and C38-C51. A series of subsequent transformations including cyclization of the E ring and hydroboration to afford the B-alkyl intermediate for the key Suzuki coupling to append the side chain took advantage of efficient stereocontrol. Ultimately, complete assembly and functionalization of the western EF sector of spongistatin was thwarted by an inoperative Suzuki coupling step intended to join the side chain to the C29-C44 sector, and later because of complications due to protecting groups, which precluded the complete elaboration of the late stage C29-C51 intermediate.