【摘 要】
：
T A novel lactone derived from dehydroabietic acid,C20H21BrO4,has been characterized by IR,1 H NMR,13C NMR and single-crystal X-ray diffraction method.It crysta
【机 构】
：
Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources(Ministry of Educat
【基金项目】
：
the open fund of Key Laboratory of Development & Application of Fores;the Project of Ten,Hundred,Thousand Distinguished Talents in New Century of Guangxi;国家自然科学基金
论文部分内容阅读
T A novel lactone derived from dehydroabietic acid,C20H21BrO4,has been characterized by IR,1 H NMR,13C NMR and single-crystal X-ray diffraction method.It crystallizes in orthorhombic,space group P212121 with α=6.4195(15),b=11.535(3),c=24.654(6)(A),V=1825.5(7)(A)3,Z=4,Mr=405.28,Dc=1.475 g/cm3,λ=0.71075(A),μ(MoKa)=2.27 mm-1,F(000)=832,the final R=0.024 and wR=0.045 for 2152 observed reflections with Ⅰ＞2σ(Ⅰ).The molecules of lactone are mainly linked through intermolecular hydrogen bonds.
其他文献
T Two complexes with a zwitterionic dicarboxylate ligand,Mn(L)2(H2O)4 1 and Co(L)2(H2O)4 2(L=1-carboxymethylpyridinium-4-carboxylate),were synthesized and struc
Solasodine 11 is a steroidal alkaloid with various biological activities.Herein,8 novel solasodine derivatives were synthesized and their effect on prostate can
T The calculations of quantum mechanical descriptors of 79 heterogeneous phenol compounds were presented at the HF/6-31G* and B3LYP/6-31G* levels of theory.Quan
Porous TiO2/ZnO composite nanofibers have been successfully prepared by electrospinning technique for the first time.It was generated by calcining TiO2/ZnCl2/PV
An efficient route for the synthesis of 5-substituted 1H-tetrazole via[2+3]cycloaddition of nitriles and sodium azide is reported using γ-Fe2O3 nanoparticles a
T Salicylaldehyde-2-(4-isobutylphenyl)-propionyl hydrazone Schiff base(H2L)has been synthesized and characterized by elemental analysis,IR,1H-NMR spectrum and s
We collect a sample of 381(271 type Ⅰ)active galactic nuclei(AGNs)with XMM-Newton observations for an analysis of the dependence of Fe Kα profiles on redshift
A new sulfated triterpenoid,3β,24-dihydroxyurs-20-enc-24-O-sulphonyl-28-oic acid(fabagoin,1)was isolated from the barks of Zygophyllum fabago L.Its structure w
A novel and simple fluorescent molecular sensor,1-pyrenecarboxaldehyde thiosemicarbazone(Hpytsc),was synthesized.Its higher sensitivity and selectivity to mercu