A new caffeoylquiniclactone, named neochlorgeniclatone, was isolated from the leaves of Betula platyphylla Suk. The Structure was established by spectroscopic data.
A new monoterpene glucoside. (2E,67.)-2.6-dimethyl-8-beta -D-glucosyloxy-2,6-octadienoic acid, was isolated from the leaves of Betula platyphylla Suk. The structure was established by spectroscopic data.
A new abietane diterpene 12-hydroxy-7-oxo-5, 8, 11, 13-tetraene-18, 6-abietanolide, together with a new natural sterol stigmasta-7, 22-diene-3β, 5α 6α-triol have been isolated from the fruiting body of the fungus P...A new abietane diterpene 12-hydroxy-7-oxo-5, 8, 11, 13-tetraene-18, 6-abietanolide, together with a new natural sterol stigmasta-7, 22-diene-3β, 5α 6α-triol have been isolated from the fruiting body of the fungus Phellinus igniarius. Their structures were elucidated by spectroscopic methods including 2D NMR techniques.展开更多
Three naturally new sesquiterpenes named 10-hydroxyepiaplysin, 10-hydroxyaplysin and 10-hydroxybromoepiaplysin have been isolated from Laurencia tristicha. On the basis of the spectroscopic techniques their structures...Three naturally new sesquiterpenes named 10-hydroxyepiaplysin, 10-hydroxyaplysin and 10-hydroxybromoepiaplysin have been isolated from Laurencia tristicha. On the basis of the spectroscopic techniques their structures were elucidated as （3S, 3αR, 8βS）-（-）-2, 3, 3α, 8β3-tetra- hydro-7-bromo-3-hydroxy-3, 3α, 6,8β-tetramethyl-lH-cyclopenta[b]benzofuran, （3R, 3αR, 8βS）- （-）-2,3,3α, 8β-tetrahydro-7-bromo-3-hydroxy-3, 3α,6,8β-tetramethyl-lH-cyclopenta[b]benzofuran and （3S, 3αR, 8βS）-（-）-2, 3,3R, 8β-tetrahydro-3-hydroxy-3,3α,6,8β-tetramethyl-lH-cyclopenta[b]- benzofuran, respectively.展开更多
文摘A new caffeoylquiniclactone, named neochlorgeniclatone, was isolated from the leaves of Betula platyphylla Suk. The Structure was established by spectroscopic data.
文摘A new monoterpene glucoside. (2E,67.)-2.6-dimethyl-8-beta -D-glucosyloxy-2,6-octadienoic acid, was isolated from the leaves of Betula platyphylla Suk. The structure was established by spectroscopic data.
基金Financial support was provided by the Science Foundation for Postdoctoral Program of China(Grant No.2003034251)NCET,and the National Natural Science Foundation of China(NNSFC,Grant No.20432030 and 30400586).We thank Professor K.L.Chen for her help of the fungal material collection.
文摘A new abietane diterpene 12-hydroxy-7-oxo-5, 8, 11, 13-tetraene-18, 6-abietanolide, together with a new natural sterol stigmasta-7, 22-diene-3β, 5α 6α-triol have been isolated from the fruiting body of the fungus Phellinus igniarius. Their structures were elucidated by spectroscopic methods including 2D NMR techniques.
基金financially supported by NNSFC(Grant No.20432030)National“863”Project(Grant No.2004AA625030,2001AA620503)the Key Innovative Project of the Chinese Academy of Sciences(Grant No.KZCX3-SW-215).
文摘Three naturally new sesquiterpenes named 10-hydroxyepiaplysin, 10-hydroxyaplysin and 10-hydroxybromoepiaplysin have been isolated from Laurencia tristicha. On the basis of the spectroscopic techniques their structures were elucidated as （3S, 3αR, 8βS）-（-）-2, 3, 3α, 8β3-tetra- hydro-7-bromo-3-hydroxy-3, 3α, 6,8β-tetramethyl-lH-cyclopenta[b]benzofuran, （3R, 3αR, 8βS）- （-）-2,3,3α, 8β-tetrahydro-7-bromo-3-hydroxy-3, 3α,6,8β-tetramethyl-lH-cyclopenta[b]benzofuran and （3S, 3αR, 8βS）-（-）-2, 3,3R, 8β-tetrahydro-3-hydroxy-3,3α,6,8β-tetramethyl-lH-cyclopenta[b]- benzofuran, respectively.
