CAS: 25954-44-3; Gentianose

上下游产品

starch Sucrose D-Galactose 2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl chloride

📜Starch,蔗糖置于acetate Buffer,Spinach α-Glucosidase I体系中,化学反应 4.0H,反应生成龙胆三糖
参考文献:Transglucosylation Activities Of Multiple Forms Of α-Glucosidase From Spinach
标题:Transglucosylation Activities Of Multiple Forms Of α-Glucosidase From Spinach
摘要:研究了菠菜 α-葡萄糖苷酶 I 和 Iv 的转葡萄糖基活性,这两种酶对水解活性具有不同的底物特异性.在麦芽糖混合物中,α-葡萄糖苷酶i不仅对麦芽低聚糖而且对可溶性淀粉都具有高活性,并且可以水解异麦芽糖,产生麦芽三糖,异麦芽糖和潘糖,以及α-葡萄糖苷酶iv对麦芽低聚糖具有高活性但活性微弱转化为可溶性淀粉和异麦芽糖,产生麦芽三糖,曲二糖和2,4-二-α-D-葡萄糖基葡萄糖. α-葡萄糖苷酶 I 和 Iv 对蔗糖的转糖基化分别导致产生了 Theanderose 和 Erlose,这表明菠菜 α-葡萄糖苷酶 I 和 Iv 可用于合成 α-1,6-葡萄糖基化和 α-1,2-和分别为1,4-葡萄糖基化产物.
Doi:10.1271/bbb.67.1160

专利信息

专利号:US-9447149-B2
优先权日:2012-03-06
标 题 :Methods and compositions for the rapid synthesis of radiometal-labeled probes
发明人：CHEN KAI; CONTI PETER STEPHEN
权利人:UNIV SOUTHERN CALIFORNIA
摘要:The present application is directed to rapid and efficient synthesis of radiometal-labeled probes, pharmaceutical compositions comprising radiometal-labeled probes, and methods of using the radiometal-labeled probes. Such radiometal-labeled probes can be used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT), and therapy studies.

专利号:US-9873612-B2
优先权日:2013-10-29
标 题:Catalytic formation of carbon monoxide (CO) and hydrogen (H2) from biomass
发明人：NEUMANN RONNY; SARMA Bidyut-Bikash
权利人:YEDA RES & DEV; YEDA RES & DEV
摘要:The present invention relates to methods of preparing carbon monoxide (CO) and hydrogen (H 2 ) by reacting biomass, a biomass component (e.g., lignin, ligno-cellulose, cellulose, hemiceullose or combination thereof) or a carbohydrate from any source with a polyoxometalate catalyst such as H 5 PV 2 Mo 10 O 40 , or solvates thereof, in the presence of a concentrated acid, under conditions sufficient to yield carbon monoxide (CO); followed by electrochemical release of hydrogen (H 2 ). The carbon monoxide (CO) and hydrogen (H 2 ) may be combined in any desired proportion to yield synthesis gas (Syngas). The present invention further relates to methods for preparing H 2 , CO and formic acid/formaldehyde from biomass, a biomass component and/or from carbohydrates.

专利号:US-4661294-A
优先权日:1985-03-18
标题:Biologically active 1-thio derivatives of vitamin D
发明人：HOLICK MICHAEL F; DE COSTA BRIAN
权利人:GEN HOSPITAL CORP
摘要:Novel synthetic derivatives of vitamin D compounds are disclosed as well as processes for their synthesis. The novel compounds are 1-alpha-thio and acylated, 1-beta-thio derivatives of vitamin D compounds and the glycosylated, hydroxylated, fluorinated, and glycosylated orthoester analogues thereof.

专利号:US-5998595-A
优先权日:1996-11-05
标题:Azidohalogenobenzyl derivatives, sugar compounds and protection of hydroxy groups
发明人：KUSUMOTO SHOICHI; FUKASE KOICHI
权利人:WAKO PURE CHEM IND LTD
摘要:Azidohalogenobenzyl derivatives of the formula (I) ##STR1## wherein A is a halogen atom, B is a halogen atom or a hydrogen atom, and X is a group reactive with a hydroxy group, methods of protecting hydroxy group(s) using said derivatives, and sugar compounds wherein a hydrogen atom of at least one hydroxy group is substituted by an azidohalogenobenzyl group. According to the present invention, there are provided novel derivatives capable of introducing a group into a compound having hydroxy group(s), which group is useful as a stable hydroxy-protecting group even in solid phase synthesis for the purpose of the extension of sugar chain under continuous acidic conditions and of being removed under mild conditions; sugar compounds protected by using said derivatives; and methods of protecting hydroxy group(s) using said derivatives.

专利号:CN-103224616-B
优先权日:2012-01-26
标 题:Synthesis for the macromonomer based on rosin acid of polyester resin method