排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Jakapun Soponpong Kulvadee Dolsophon Chawanee Thongpanchang Anthony Linden Tienthong Thongpanchang 《Tetrahedron letters》2019,60(6):497-500
The structure of a constrained bicyclic chiral derivatizing agent (CDA), 1,2,3,4-tetrahydro-1,4-epoxynaphthalene-1-carboxylic acid, THENA 1, was modified by replacing both exo-methylene protons with deuterium atoms. The modified CDA, THENA-d22, could be used to assign the absolute configuration of chiral secondary alcohols with good reliability. Compared with THENA, the multiplicity of the methylene proton signals in the 1H NMR spectra of THENA-d2 derivatives is less complicated and the new CDA thus offers simpler NMR spectra for data interpretation. 相似文献
2.
Jittra KornsakulkarnKulvadee Dolsophon Nattawut BoonyuenTanapong Boonruangprapa Pranee RachtaweeSamran Prabpai Palangpon Kongsaeree Chawanee Thongpanchang 《Tetrahedron》2011,67(39):7540-7547
Eleven new dihydronaphthalenones 1-11, together with five known compounds; 5-hydroxydihydrofusarubin C (12), javanicin, bostrycoidin, anhydrofusarubin, and 3-O-methylfusarubin, were isolated from the endophytic fungus Fusarium sp. BCC14842. Structures were elucidated by analyses of the NMR spectroscopic and mass spectrometry data. Javanicin, 3-O-methylfusarubin, compounds 3 and 7 exhibited antimycobacterial and cytotoxic activities. Javanicin also displayed antifungal activity with IC50 of 6.16 μg/mL, while compounds 2, 4, 5, 8, and 12 showed only cytotoxic activity. 相似文献
1