【摘 要】
:
Two new diterpenoid quinones, coleon S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, thei
【出 处】
:
Chinese Chemical Letters
论文部分内容阅读
Two new diterpenoid quinones, coleon S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phenathrenedione-4b,5,6,8a,9,10-hexahydro-3,9(,10(-trihydroxy-4b,7,8-rimethyl -2-(2-ethoxypropyl)(1) and 1,4-phenathrenedione-2,3,4b,5,6, 8a,9,10-octahydro-3,9(,10(- tri-hydroxy-4b,7,8-trimethyl-2-propylene(2), respectively.
Two new diterpenoid quinones, coleon S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phenathrenedione-4b, 5,6,8a, 9,10 hexahydro-3,9 (, 10 (-trihydroxy-4b, 7,8-rimethyl -2- (2-ethoxypropyl) (1) and 1,4-phenathrenedione-2,3,4b, 9,10-octahydro-3,9 (, 10 (- tri-hydroxy-4b, 7,8-trimethyl- 2-propylene
其他文献
对基于CCD工艺提取的BSIM3v3模型,在CCD片上放大器电路上进行了验证,通过在直流、瞬态和交流条件下对比电路的仿真数据和实际测试数据,验证了该模型,即提取的模型能够满足电
在IEEE国际电子设备会议上,IBM的科学家们展示了一系列突破性的科研成果,将会大大推动更小、更快、更强处理器芯片的研发。IBM表示,五十多年来,计算机处理器一直在以惊人的速
对南黄海辐射沙洲中心沿岸地区两个钻孔采用高密度、定量采样方法进行了有孔虫和沉积学分析。结果表明,该地区晚更新世晚期可能发育了古长江河道、河口、河流边滩或河漫滩以及
Two potential chiral auxiliaries, N (E ) enoyl(-) bornane 10,2 sultams, were synthesized from (-) bornane 10,2 sultams. The molecular crystal structu
Arylation of acrylamide and acrylonitrile were carried out with various arenediazonium tetrafluoroborates in the presence of a catalytic amount of Pd(OAc)2 in e
再生障碍性贫血一阵发性睡眠性血红蛋白尿综合征(AA-PNH综合症)在儿科很少见,近日我院收治一例,现报告如下:患儿,男,11岁,安微人,因面黄,乏力5年入院。5年来患儿面色发黄、眼黄、乏力,每于早晨起床
新生儿缺氧缺血性脑病(HIE)是导致新生儿死亡及后遗症的重要原因之一,特别是重型HIE。为了探讨超早期治疗重型HIE预防脑性瘫痪(脑瘫)的效果,作者超早期应用光量子血及脑活素救治重型HIE40例,并进行
The static O-H bond parameters including O-H bond length, O-H charge difference, O-H Mulliken population and O-H bond stretching force constant (k) for 17 pheno
在过去十年中,财务报告产生的环境和具体内容发生了深刻的变化,主要表现为:新技术和复杂业绩计量标准的应用使企业生产会计信息数量不断增加、质量不断提高;会计准则环境日益
The first asymmetry synthesis of glutinone and its three diastereoisomers were carried out in 8 steps and the stereochemistry of this natural product was given