system of antimonypentachloride, chlorotrimethylsilane and tin(II) iodide, α-substituted cyclic ethers are stereoselectively prepared from lactones by successive treatment with 1-(t-butyldimethylsiloxy)-1-ethoxyethene and silyl nucleophiles such as triethylsilane, allyltrimethylsilane and trimethylsilyl cyanide. These catalysts also promote the reaction of γ-, δ-, and e-trimethylsiloxy carbonyl compounds
α-Mono- and α,α,-disubstituted cyclicethers are prepared in good yields by the successive treatment of lactones with t-butyldimethylsiloxy-1-ethoxyethene and silyl nucleophiles (triethylsilane, allyltrimethylsilane, trimethylsilyl cyanide, etc.) in the presence of a catalytic amount of trityl salts such as TrSbCl6, TrSbF6 and TrClO4 or antimony pentachloride combined with chlorotrimethylsilane and
通过用叔丁基二甲基甲硅烷氧基-1-乙氧基乙烯和甲硅烷基亲核试剂(三乙基硅烷、烯丙基三甲基硅烷、三甲基氰化氰化物等)连续处理内酯,以良好的收率制备 α-单-和 α,α,-二取代环醚。催化量的三苯甲基盐,如 TrSbCl6、TrSbF6 和 TrClO4 或五氯化锑与三甲基氯硅烷和锡 (II) 卤化物结合。
[EN] 6-SUBSTITUTED-9H-PURINE DERIVATIVES AND RELATED USES<br/>[FR] DÉRIVÉS DE 9H-PURINE SUBSTITUÉS EN POSITION 6 ET UTILISATIONS ASSOCIÉES
申请人:BLACK DIAMOND THERAPEUTICS INC
公开号:WO2022178256A1
公开(公告)日:2022-08-25
The present disclosure relates compounds of Formula (I'): and pharmaceutically acceptable salts and stereoisomers thereof. The present disclosure also relates to methods of preparing the compounds, compositions comprising the compounds, and methods of using the compounds, e.g., in the treatment of cancer.
diarylketone-enabled photocatalytic hydrogen atom transfer and a subsequent fragmentation of the obtained alkylated hydrazide. This metal-free protocol provides a preparatively usefulroute to various medicinally-relevant compounds, such as homobenzylic ethers, aryl ethyl amines, and β-amino acids.