14064-39-2Relevant articles and documents
Four new pregnane glycosides from Gymnema latifolium and their α-glucosidase and α-amylase inhibitory activities
Yen, Duong Thi Hai,Trang, Do Thi,Tai, Bui Huu,Doan, Vu Van,Yen, Pham Hai,Nhiem, Nguyen Xuan,Van Minh, Chau,Hoang Duc, Manh,Park, SeonJu,Hyuk Lee, Jae,Kim, Sun Yeou,Kim, Seung Hyun,Kiem, Phan Van
supporting information, p. 4460 - 4467 (2020/03/03)
Four new pregnane glycosides, gymlatifosides A - D (1 ? 4) and one known pregnane glycoside, verticilloside J (5) were isolated from the leaves of Gymnema latifolium Wall. ex Wight. Their chemical structures were elucidated on the basis of extensive spectroscopic methods, including 1D, 2D NMR, HR-ESI-MS, and in comparison with the reported data. All these compounds were tested for α-glucosidase and α-amylase inhibitory activities. Compound 5 exhibited the most anti α-glucosidase activity with inhibitory percentage of 37.8 ± 1.5% at the concentration of 200 μM. Compounds 1–4 showed moderate anti α-glucosidase activity with inhibitory percentage ranging from 7.0 to 30.1%. In addition, all compounds 1–5 showed moderate/weak anti α-amylase activity in the investigated test.
New calogenin pregnane glycoside derivative from Huernia saudi- arabica and its Lipase and α-Glucosidase Inhibitory Activities
AbdElSattar, Essam,El Sayed, Abeer Mohamed,Khalil, Mohammed Nabil
, (2020/04/27)
As ongoing investigation of Huernia saudi-arabica D.V.Field (Asclepiadaceae), a new steroidal pregnane glycoside (Huernioside A) was isolated from dichloromethane fraction (DCM); it was identified as 3β, 11, 14β, 20(R)-tetrahydroxy-pregna-5,9(11)-diene-3-O-β-D-thevetopyranosyl-(1-4)-β-D-cymaropyranoside(HCP) through analysis of 1D, 2D NMR besides ESI-MS data. The alcoholic extract of the aerial part (ALE), DCM and HCP showed inhibitory potential against pancreatic lipase compared to orilstat. Among the tested samples, the ALE and HCP exhibited a promising pancreatic lipase inhibitory commotion through IC50 values of 0.61 ± 0.15, 1.23 ± 0.07 mg/ml (equivalent to 88.8 μM), respectively. HCP was prevailed to have a mixed mode of inhibition as exposed by enzyme kinetic studies. Hydrophobic interactions were the major forces involved in ligand enzyme interactions. In contrast, moderate α-glucosidase inhibitory activities were evidenced for ALE and HCP (% inhibition: 24.8 ± 1.8 and 26.6 ± 2.5, respectively) compared to acarbose. This investigation is the first to report on the possible in vitro anti-obesity and anti-diabetic impact of H. saudi-arabica.
Melanogenesis inhibitory pregnane glycosides from Cynanchum atratum
Jin, Qinghao,Han, Xiang Hua,Yun, Cheong-Yong,Lee, Chul,Lee, Jin Woo,Lee, Dongho,Lee, Mi Kyeong,Jung, Sang-Hun,Hong, Jin Tae,Kim, Youngsoo,Hwang, Bang Yeon
supporting information, p. 1252 - 1256 (2018/03/12)
Bioassay-guided fractionation of the methanolic extract from the roots of Cynanchum atratum has resulted in the isolation of three new pregnane glycosides (1–3) along with four known compounds (4–7). Their structures were identified by analysis of the spectroscopic data including extensive 2D NMR. All of the isolates were evaluated for their potential to inhibit the melanin production in α-melanocyte stimulating hormone (α-MSH)-activated B16 melanoma cells. Of these, compounds 4–7 dose-dependently inhibited the melanin production with the IC50 values ranging from 4 μM to 33 μM.
Two new 14, 15-secopregnane-type steroidal glycosides from the roots of Cynanchum limprichtii
Liu, Jia-chuan,Yu, Li-li,Chen, Shao-fei,Lu, Xiao-jie,Zhao, Dan,Wang, Hai-feng,Chen, Gang,Pei, Yue-hu
, p. 261 - 267 (2017/10/06)
Two new steroidal glycosides 1 and 2, along with three known ones (3–5), were isolated from the 95% ethanol extract of the roots of Cynanchum limprichtii Schltr. The structure of the new compounds was elucidated as 3-O-α-L-diginopyranosyl-(1→4)-β-D-digito
New C21 steroidal glycosides from the roots of Cynanchum stauntonii and their protective effects on hypoxia/reoxygenation induced cardiomyocyte injury
Lei, Qiao-Shi,Zuo, Yi-Han,Lai, Chang-Zhi,Luo, Jin-Fang,Pang, Shu-Wen,Zhou, Hua,Yao, Xin-Sheng,Tang, Jin-Shan
, p. 1716 - 1722 (2017/07/27)
Phytochemical investigations from the roots of Cynanchum stauntonii led to obtain four new C21 steroidal glycosides (1–4) and one known compound stauntoside F (5). Their chemical structures were characterized by sophisticated analyses of IR, HR
C21 steroidal glycosides from Cynanchum stauntonii induce apoptosis in HepG2 cells
Che, Chun-Tao,Ma, Lin,Wang, Lei,Wei, Yu-Jian,Wu, Zheng-Feng,Ye, Wen-Cai,Yin, Zhi-Qi,Yu, Shu-Le,Zhang, Jian,Zhang, Qing-Wen,Zhao, Ming
, p. 55 - 61 (2020/07/03)
Two new (1–2) and three known (3–5) C21 steroidal glycosides were isolated from Cynanchum stauntonii. Their structures were elucidated on the basis of 1D and 2D-NMR spectroscopic data as well as HRTOFMS analysis. The cytotoxicity of the compoun
New Sweet-Tasting C21-Pregnane Glycosides from Pericarps of Myriopteron extensum
Sun, Guo,Dai, Qin,Zhang, Hong-Xia,Li, Zhi-Jian,Du, Zhi-Zhi
, p. 9381 - 9389 (2016/12/23)
Ten novel C21 pregnane glycosides, extensumside C-L (1-10), were isolated as highly sweet-tasting substances from the edible pericarps of Myriopteron extensum (Wight) K. Schum by sensory-guided fractionation and purification. Their structures were determined through 1D and 2D NMR, such as HSQC, HMBC, 1H-1H COSY, HSQC-TOCSY, and ROESY, as well as other spectroscopic analysis combined with chemical evidence. These compounds shared the same aglycone, 3β,16α-dihydroxy-pregn-5-en-20-one, and contained the deoxysugar chain and the glucose chain which were linked to C-3 and C-16 of the aglycone, respectively. The sweetness potency was evaluated by a human sensory panel test and preliminary structure-taste relationship was discussed. The sweetness intensities of these compounds are between 50 and 400 times greater than that of sucrose. Furthermore, quantitation analyses of compounds 1, 3, 4, and 6 in different parts of M. extensum indicated that the concentrations of these sweet components in the pericarps are obviously higher than those in stems and roots.
Hirundigenin type C21 steroidal glycosides from Cynanchum stauntonii and their anti-inflammatory activity
Lai, Chang-Zhi,Liu, Hai-Bin,Liu, Jian-Xin,Ouyang, Qin,Pang, Shu-Wen,Zhou, Hua,Tian, Hai-Yan,Liu, Liang,Yao, Xin-Sheng,Tang, Jin-Shan
, p. 59257 - 59268 (2016/07/06)
Six new hirundigenin-type C21 steroidal glycosides, namely hirundigosides E-J (1-6), were obtained from the dried roots of Cynanchum stauntonii. Their chemical structures were elucidated by analyses of HR ESI-TOF MS, 1D, 2D-NMR, and X-ray cryst
Nine new steroidal glycosides from the roots of Cynanchum stauntonii
Yu, Jin-Qian,Deng, An-Jun,Qin, Hai-Lin
, p. 79 - 90 (2013/02/22)
Nine new steroidal glycosides, named as stauntosides C-K (2, 5, 7-10, 13, 14, and 16), along with seven known compounds (1, 3, 4, 6, 11, 12, and 15) were isolated from the 95% ethanol extract of the roots of Cynanchum stauntonii. The structures of these new compounds were elucidated on the basis of extensive spectroscopic analyses, mainly 1D and 2D NMR, and HRESI-MS, and qualitative chemical methods. Their significance in terms of the chemotaxonomy of C. stauntonii is discussed.
Two secopregnane-type steroidal glycosides from Cynanchum stauntonii (Decne.) Schltr.ex Levl.
Shibano, Makio,Misaka, Ayaka,Sugiyama, Kayoko,Taniguchi, Masahiko,Baba, Kimiye
experimental part, p. 304 - 308 (2012/07/27)
Two new steroid glycosides, stauntosaponins A (1) and B (2), were isolated from Cynanchum stauntonii (Decne.) Schltr.ex Levl. (Asclepiadaceae) together with five known compounds, anhydrohirundigenin monothevetoside, glaucogenin C mono-d-thevetoside, hirundoside A, cynatratoside A, and glaucogenin C. Stauntosaponins A and B were formulated as 3-O-β-d-oleandropyranosyl-14, 16: 15, 20: 18, 20-triepoxy-14, 15-secopregn-4, 6, 8(14)-triene (1) and 3-O-β-d-thevetopyranosyl-14, 16: 15, 20: 18, 20-triepoxy-14, 15-secopregn-4, 6, 8(14)-triene (2). Compounds 1 and 2 showed moderate inhibitory activities against Na+/K+-ATPase with IC 50 values of 21 and 29 μM, respectively, whereas ouabain as a positive control displayed an IC50 value of 3.5 μM.