García Jessica, Gilardoni Gianluca, Cumbicus Nixon, Morocho Vladimir
Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Loja 1101608, Ecuador.
Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja (UTPL), Loja 1101608, Ecuador.
Plants (Basel). 2020 Feb 4;9(2):187. doi: 10.3390/plants9020187.
The phytochemical research on the species , collected in the Province of Loja (Ecuador), led to the isolation of a rare sesquiterpenoid, called Sipaucin A. The structure was confirmed by nuclear magnetic resonance (NMR) and mass spectrometry (MS). Furthermore, the essential oil of the fruits was obtained by hydrodistillation and analyzed by gas chromatography, coupled to mass spectrometry (GC-MS) and flame ionization detector (GC-FID). Twenty-seven compounds were identified in a polydimethylsiloxane column (DB-5ms) and nineteen in a polyethylene glycol column (HP-INNOWax). Major compounds were α-pinene (24.3%, 20.3%), β-pinene (21.7%, 22.7%), β-myrcene (11.3%, 14.8%), limonene (10.0%, 11.3%), -ocimene (8.5%, 8.1%), and -ocimene (8.9%, 8.4%). In addition to the chemical analysis, the essential oil was submitted to enantioselective analysis of two major chiral monotherpenes, determining an enantiomeric excess of 100.0% for (+)-α-pinene and 6.7% for (+)-β-pinene.
对采集于厄瓜多尔洛哈省的该物种进行植物化学研究，从中分离出一种名为西帕辛A的罕见倍半萜类化合物。其结构通过核磁共振（NMR）和质谱（MS）得以确认。此外，通过水蒸馏法获得果实的精油，并采用气相色谱-质谱联用（GC-MS）和火焰离子化检测器（GC-FID）进行分析。在聚二甲基硅氧烷柱（DB-5ms）中鉴定出27种化合物，在聚乙二醇柱（HP-INNOWax）中鉴定出19种化合物。主要化合物为α-蒎烯（24.3%，20.3%）、β-蒎烯（21.7%，22.7%）、β-月桂烯（11.3%，14.8%）、柠檬烯（10.0%，11.3%）、-罗勒烯（8.5%，8.1%）和-罗勒烯（8.9%，8.4%）。除化学分析外，对该精油中的两种主要手性单萜进行对映体选择性分析，结果表明（+）-α-蒎烯的对映体过量为100.0%，（+）-β-蒎烯的对映体过量为6.7%。
