作者:Jean-luc Wolfender、Matthias Hamburger、Jerome D. Msonthi、Kurt Hostettmann
DOI:10.1016/0031-9422(91)80080-k
日期:1991.1
From a dichloromethane extract of the aerial parts and from a methanolic root extract of Chironia krebsii, 11 1-hydroxyxanthones and six xanthone glycosides have been isolated. The glycosides 5-hydroxy-3-methoxy-1-O-primeverosylxanthone, 1-hydroxy-3-methoxy-5-O-primeverosylxanthone, 5-hydroxy-3-methoxy-1-O-beta-D-glucosylxanthone, 3,5,6,7,8-pentamethoxy-1-O-primeverosylxanthone are new natural products. Their structures were established by spectroscopic (UV, EIMS, D/CIMS, H-1 and C-13 NMR) and chemical methods.
COATING FOR SUBSTRATE
申请人:W. L. Gore & Associates, Inc.
公开号:EP2950832A1
公开(公告)日:2015-12-09
US9272075B2
申请人:——
公开号:US9272075B2
公开(公告)日:2016-03-01
[EN] COATING FOR SUBSTRATE<br/>[FR] REVÊTEMENT POUR SUBSTRAT
申请人:GORE & ASS
公开号:WO2014118382A1
公开(公告)日:2014-08-07
There is provided inter alia a substrate with a surface having a hydrophilic coating comprising a cross-linked copolymer of components A and B, and optional components C and D; wherein component A comprises one or more C2-C16 hydrophilic monomers each bearing one or more alkene and/or alkyne groups; component B comprises one or more hydrophilic polymers each bearing two or more alkene and/or alkyne groups; component C, if present, comprises one or more beneficial agents each bearing one or more alkene or alkyne groups; and component D, if present, comprises one or more low molecular weight cross-linking agents each bearing two or more functional groups independently selected from thiol, alkene and alkyne groups; wherein the cross-linked copolymer is formed by radical polymerisation involving the alkene and/or alkyne groups of components A, B and C (if present) and involving the functional groups of component D (if present); wherein the hydrophilic coating optionally comprises component E which comprises one or more beneficial agents, wherein component E does not form a copolymer with components A, B, C (if present) and D (if present); and wherein the hydrophilic coating is covalently attached to the surface of the substrate.
AGRAWAL, AMULAYA;SINGH, J., PHYTOCHEMISTRY, 27,(1988) N 11, C. 3692-3694