类视黄醇是一类在结构上与视黄酸有关的合成和天然化合物。在一个新的类杂环桥和构象受限的类维生素的发现搜索,在这里我们报告的4-(7,8,9,10四氢7,7,10,10四甲基合成4 ^ h -从5,6,7,8-四氢-5,5,8,8-四甲基萘-2-酚开始的苯并[6,7] chromeno [4,3 - d ]噻唑-2-基)苯甲酸(10) (13)。尝试了几种方法以获得目标化合物10。在元素分析和光谱数据(1 H NMR,IR和MS)的基础上,对合成化合物的结构进行了阐明。
A method for the thiolysis of nitriles by applying Lawesson’s reagent and facilitated by the addition of boron trifluoride-diethyl ether complex is reported. The method opens an easy access to primary thioamides. Aromatic, benzylic, and aliphatic nitriles were converted into the corresponding thioamides in high to quantitative yields (even in unfavorable cases, e.g., ortho-substituted benzonitriles). The reaction was performed in 1,2-dimethoxyethane-tetrahydrofuran or toluene-diethyl ether solvent mixtures at 20-50 ËC, and exhibited considerable selectivity in the case of multifunctional nitrile substrates, such as cyanomethyl N-acetylphenylalaninate, benzoylacetonitrile, 4-cyanobenzamide, 4-acetyl-benzonitrile, or pent-3-enenitrile.
With the aim of developing novelannulationsvia ketene intermediates, allenyl imide and alkynoates bearing good leaving groups are used for their function in a tandem conjugate addition–elimination reaction (SN2′ type) promoted by nucleophilic phosphine catalysts. By utilizing thioamides as 1S,3N-bis-nucleophiles, [3+3] and [3+2] annulations have been established to allow rapid access to 1,3-thiazin-4-ones
Disclosed is a novel class of thiazole, thiadiazole, and oxadiazole compounds which are substituted at their nuclear carbons by aromatic moieties. These compounds exhibit antifungal activity against a variety of fungi including strains which have proven to be resistant to treatment with known antifungal agents such as Fluconazole.
Novel class of thiomorpholino substituted thiazoles
申请人:——
公开号:US20010000177A1
公开(公告)日:2001-04-05
Disclosed is a novel class of thiazole, thiadiazole, and oxadiazole compounds which are substituted at their nuclear carbons by aromatic moieties. These compounds exhibit antifungal activity against a variety of fungi including strains which have proven to be resistant to treatment with known antifungal agents such as Fluconazole.
Disclosed is a novel class of thiazole, thiadiazole, and oxadiazole compounds which are substituted at their nuclear carbons by aromatic moieties. These compounds exhibit antifungal activity against a variety of fungi including strains which have proven to be resistant to treatment with known antifungal agents such as Fluconazole.