cosy相关论文
建立黄芪注射液的1H NMR指纹图谱,并对8批黄芪注射液进行初步的质量分析。采用核磁共振技术分别建立黄芪注射液的初级和次级代谢物......
目的:建立利用仪器分析苯丙哌林未知杂质化学结构的方法,并对2个未知杂质进行结构确证。方法:采用Inertsil ODS-3（4.6μm,2.1 mm×1......
核磁共振(nuclear magnetic resonance,NMR)是一种基于具有自旋性质的原子核在核外磁场作用下,吸收射频辐射而产生能级跃迁的谱学......
在前文[1]中,我们报道了从美丽红豆杉茎皮中分离得到的三个非紫杉烷二萜型的新的二萜化合物1、2和3.本文报道从美丽红豆杉茎皮中......
Two new compounds named decuroside VI (1) and decursidate (2) were isolated from the roots of Peucedanum decursivum - a ......
One new grayanane diterpene glucoside, rhodomoside A 1 was isolated from the roots of Rhododendron molle G. Don (Ericace......
A new sesquiterpene lactone, strychnilactone (1), together with five known sesquite- rpenoids, linderane (2), lindenenol......
从川产家种华西贝母(Fritillaria siechuanica)鳞茎中分出贝母辛(peimisine)(碱Ⅲ)。应用光谱法(~1H—~1H,~(13)C—~1H COSY,2D—N......
炎琥宁为中药提取物穿心莲内酯经结构改造后获得的一个抗菌、抗病毒新药,本文应用1D NMR和脉冲梯度场2D NMR实验技术(gCOSY,gHSQC,......
Two new steroidal alkaloids,veraussines A(1) and B(2) were isolated from the roots and rhizomes of Veratrum nigrum var.u......
从地奥心血康原料药材黄山药根茎中分离得到一个结构新颖的微量成分.其结构通过包括2-D NMR在内的波谱分析确定为葡萄糖基接在内酯......
消癌平注射液是通关藤提取物的单方制剂。本研究运用溶剂法结合硅胶、Sephadex LH20、ODS和半制备高效液相色谱等色谱分离方法,从......
A new norditerpenoid alkaloid, hemsleyasine 1, has been isolated from the roots of Aconitum hemsleyanum var. circinatum ......
Two new acetylated flavonoid diglycosides, scutellarein-5-O-[a-L-rhamnopyranosyl-(1→ 4)-b-D-6-O-acetylglucopyranoside] ......
目的:研究板蓝根的化学成分。方法:采用大孔树脂、硅胶柱层析、Sephadex LH-20和反相C18等柱色谱法进行分离和纯化,通过MS、NMR、C......
奥拉西坦是一种改善脑功能药物.该文研究了该药的核磁共振波谱特征和构象.吡咯环的各项异性效应使侧链亚甲基的质子的磁不等价.由......
A new compound,8,8′-dienecyclostellettamine,was isolated from the marine sponge Amphimedon compressa.Its structure was ......
Two new cyclic diarylheptanoids juglanin A (1) and juglanin B (2) were isolated from the pericarps of Juglans regia L.Th......
