97747-56-3Relevant articles and documents
NINE PHENETHYL ALCOHOL GLYCOSIDES FROM STACHYS SIEBOLDII
Nishimura, Hiroaki,Sasaki, Hiroshi,Inagaki, Nobuyuki,Chin, Masao,Zhengxiong, Chen,Mitsuhashi, Hiroshi
, p. 965 - 969 (1991)
Three new phenethyl alcohol glycosides together with six known compounds have been isolated from the leaves of Stachys sieboldii.On the basis of chemical and spectral analyses, the structures of three new compounds named stachysosides A, B and C have been established as 2-(3,4-dihydroxyphenyl)ethyl O-α-L-arabinopyranosyl-(1->2)-α-L-rhamnopyranosyl-(1->3)-4-O-E-caffeoyl-β-D-glucopyranoside, 2-(3,4-dihydroxyphenyl)ethyl O-α-L-arabinopyranosyl-(1->2)-α-L-rhamnopyranosyl-(1->3)-4-O-E-feruloyl-β-D-glucopyranoside and 2-(3-hydroxy-4-methoxyphenyl)ethyl O-α-L-arabinopranosyl-(1->2)-α-L-rhamnopyranosyl-(1->3)-4-O-E-feruloyl-β-D-glucopyranoside, respectively.
An Approach to the Synthesis of Electron-Rich and Hindered Esters and Its Application to the Synthesis of Acteoside
Zhang, Xiaojuan,Yang, Yutong,Wang, Fuye,Zhou, Zhengbing,Zhang, Hongbin,Zhu, Yugen
supporting information, p. 9210 - 9215 (2021/11/30)
Electron-rich esters are ubiquitously distributed in natural products and play a central role in bioactivities. Herein, we disclose an efficient, mild, and general esterification approach to the synthesis of these esters by employing gold(I)-catalyzed acylation reaction with alkyne-tethered mixed anhydrides and alcohols. This method can be applied to ester-bond formation in complex substrates and facilitates efficient synthesis of acteoside, which belongs to the family of phenylethanoid glycosides and possesses a broad range of bioactivities.
Synthesis of verbascoside: A dihydroxyphenylethyl glycoside with diverse bioactivity
Duynstee, Howard I.,De Koning, Martijn C.,Ovaa, Huib,Van Der Marel, Gijs A.,Van Boom, Jacques H.
, p. 2623 - 2632 (2007/10/03)
TMSOTf-mediated condensation of ethyl 4,6-O-benzylidene-1-thio-β-D- glucopyranoside (2) with peracetylated α-L-rhamnopyranosyl trichloroacetimidate donor 3a resulted in the formation of orthoester 4, which, after acetylation, rearranged into ethyl 3-O-(α-L-rhamnopyranosyl)-l- thio-β-D-glucopyranoside derivative 6a. The latter compound was converted into the corresponding trichloroacetimidate donors 8a-b. An alternative approach to trichloroacetimidate 8c commenced with the iodonium ion mediated glycosidation of ethyl 2,3,4-tri-O-benzoyl-1-thio-α-L-rhamnopyranside (15) with 1,2:5,6-diisopropylidene-D-glucofuranose (16) to afford disaccharide 17, which was transformed into 8c in five steps. Condensation of 8a-c with 2- [3,4-di-(tert-butyldimethylsilyloxy)phenyl]ethanol (12) gave, after deacylation, key intermediate 14. Protecting-group manipulation of 14 and subsequent esterification of resulting 22 with 3,4-di-O-tert- butyldimethylsilylcaffeic acid (27) gave, after deprotection, verbascoside (1).