Structural Characterization and Chemical Modification of a Glucan from Spores of Ganoderma lucidum

来源 :Chinese Chemical Letters | 被引量 : 0次 | 上传用户:tiefer34
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A linear a-D-(13)-glucan, named PSG, was obtained from the spores of Ganoderma lucidum. The synthesis of positively and negatively charged polyelectrolytes from PSG was developed. Amine groups and carboxymethyl groups were introduced through nucleophilic substitution with 3-chloropropylamine or chloroacetic acid, respectively. Reaction conditions were varied to obtain insight into the influence of variables on the degree of substitution. A linear aD- (13) -glucan, named PSG, was obtained from the spores of Ganoderma lucidum. The synthesis of positively and negatively charged polyelectrolytes from PSG was developed. Amine groups and carboxymethyl groups were introduced through nucleophilic substitution with 3-chloropropylamine or chloroacetic acid, respectively. Reaction conditions were varied to obtain insight into the influence of variables on the degree of substitution.
其他文献
S-(-)-N-[(1-ethyl-2-pyrrolidinyl)methyl]-5-iodo-2,3-dimethoxybenzamide (proposed generic name, epidepride) is a very potent dopamine D2 antagonist. It was synth
肠血管畸形是引起儿童胃肠出血罕见的病因。作者通过分析1975~1995年间9例肠血管畸形患儿的病史资料,总结了该病的诊治特点。此9例患儿均经血管造影及术后病检确诊,且均排除
全国水利水电建设战线上的职工同志们:我们光荣地出席了全国群英大会。在这次大会上,听到了朱德副主席代表党中央给大会的祝词,周恩来总理给我们的宝贵指示,李富春副总理和
儿童肘内翻肱骨髁上截骨丝线内固定术王敏戴祥麒张质彬蔡迎天津市天津医院(天津300211)肘内翻是儿童肱骨髁上骨折最常见的合并症,特别是伸直尺偏型骨折。矫正肘内翻畸形最有效方法即是
季节的变化对汽车的节油与安全有显著的影响,驾驶员应根据季节的气候变化特点,及时对所驾车辆进行合理的调整、保养、使车辆保持良好的技术状况。针对汽车夏季的运行特点,为
We are seated in the auditorium at Bei jing Foreign Studies University on May 28,2016.Holding hands and standing face-toface in the spotlight on stage are Isabe
纪录片《人口》关注人口话题,聚焦个体生命与大时代。主要人物管贻兰今年79岁,是世世代代生活在山东高密东北乡的农村妇女,也是诺贝尔文学奖获得者莫言的姑姑。片子预计年底
目的 为分析缺氧缺血性脑病新生儿红细胞胞浆钙系统的变化及临床价值.方法 检测了26例缺氧缺血性脑病新生儿及16例足月正常新生儿红细胞胞浆总钙、游离钙、钙泵、钠泵含量及
NdCl 3 FeCl 3 graphite intercalation compounds were synthesized by molten salt exchange method. The state of the intercalates and the relative contents of
期刊
河北省四百万大军投入水利大战大规模的水利大建设高潮,已迅速在河北省形成,参加水利运动的劳力已达四百万人,到处出现了大、中、小工程齐头并进,防洪、防涝、灌溉、水土保