【摘 要】
:
The present study isolated 17 compounds from the tubers of Bletilla striata(Orchidaceae), using various chromatographic techniques. Their structures were identi
【机 构】
:
Guizhou Provincial Key Laboratory of Pharmaceutics, School of Pharmacy, Guizhou Medical University,E
【出 处】
:
Chinese Journal of Natural Medicines
论文部分内容阅读
The present study isolated 17 compounds from the tubers of Bletilla striata(Orchidaceae), using various chromatographic techniques. Their structures were identified based on their physical-chemical properties and spectroscopic analyses. Among them, two new 2-isobutylmalates, named bletimalates A(1) and B(2), together with other fifteen known compounds(3-17), were isolated and identified. Additionally, compounds 3, 4, and 8 were isolated from this plant for the first time.
Their structures are identified based on their physical-chemical properties and spectroscopic analyzes. Among them, two new 2-isobutylmalates, named bletimalates A (1 ) and B (2), together with other fifteen known compounds (3-17), were isolated and identified. Additionally, compounds 3, 4, and 8 were isolated from this plant for the first time.
其他文献
喉室囊肿占全部喉囊肿的16.1%。(?)等统计在54例喉囊肿中,各类喉室囊肿占21例。可分为含气囊肿与真性囊肿二大类,前者较后者稍多,且当含气囊肿的“颈”封闭后,可以继发成粘
鼻耳性脑脊液漏常常并发于颅底骨折等颅面外伤、鼻及副鼻窦和中耳手术、先天性畸形等。鼻性脑脊液漏即鼻漏,耳性脑脊液漏即耳漏,临床上靠X线及CT检查等难以发现骨缺损,症状
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
采用三相交流发电机的长江-750型摩托车,在使用中,应经常清洁GZL-1型整流器,保持其接线板表面的清洁。尽管该器件位于燃油箱的下面,但由于接线板直接暴露,在车辆行驶中容易
后部玻璃体脱离发生于老年人,且与许多眼病有关。它在包括裂孔源性视网膜脱离、牵引性视网膜脱离、增殖性糖尿病性视网膜病变等玻璃体视网膜疾病中起重要作用。目前对后部玻
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
最新研究表明,雌性哺乳动物卵巢内存在雌性生殖干细胞(FGSCs),而且这种FGSCs在体内可以分化为卵子并产生后代。这一发现打破了传统的观点即雌性哺乳动物在出生时即拥有不可更
我是一个超级车迷。在很多年以前我就梦想能拥有一辆进口大排量赛车,驾驭着它在赛车场上驰骋,体味那种男人的洒脱。但是,我与众多的车迷一样因囊中羞涩,随着时光的推移,这种
带状疱疹眼炎是因水痘带状疱疹病毒侵犯了三叉神经的第一或第二支而发生的眼睑、皮肤及角膜等处病变,但同时并发角膜炎、出血性虹膜睫状体炎、继发青光眼者罕见,现将我院一
胆囊癌病人肿瘤侵犯胆囊管的重要性尚未见报道,虽然胆囊管与胆囊是相连的,但是它位于肝十二指肠韧带中,它的结构也与胆囊不同。本文作者回顾分析了1999年3月至2004年9月在日