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1)  asymmetric dihydroxylation
不对称双羟化
1.
The use of(QD)_2 PYDZ in asymmetric dihydroxylation(AD)of olelfins provided the corresponding chiral vicinal diols with 88~95%chemical yield and the values of enantiomeric excess(ess)are between 75% and 99%.
烯烃不对称双羟化反应(Asymmetric D ihydroxylation,简称AD反应)和不对称氨羟化反应(Asymmet-ric Am inohydroxylation,简称AA反应)是获得手性连二醇和手性β-氨基醇的最简便的方法[1]。
2.
A series of enantiopure β-amino alcohols were synthesized from the corresponding diols pro- duced by Sharpless asymmetric dihydroxylation, cyclization of diols, azide opening of epoxides, and cata- lytic hydrogenation of the resulting azido alcohols.
在手性配体1,4-双(9-O-奎宁)-2,3-二氮杂萘[(QN)2PHAL]存在下,通过烯烃的Sharpless不对称双羟化、环化、亲核开环和催化氢化等步骤方便地合成了手性β-氨基醇。
3.
Moreover, the resin-bound OsO 4 exhibited excellent catalytic activity in the asymmetric dihydroxylation of olefins and was easily recovered and reused in five consecutive reactions, without significant decrease in activity.
合成了在烯烃不对称双羟化反应中可回收和重复使用的TentaGel支载的OsO4催化剂 。
2)  Sharpless' asymmetric dihydroxylation
sharpless不对称双羟化
1.
Methods Sharpless′ asymmetric dihydroxylation was employed to construct the 3-hydroxychroman.
方法 运用sharpless不对称双羟化构筑手性的 3 羟基苯并二氢吡喃。
3)  asymmetric dihydroxylation
不对称双羟基化
4)  asymmetric dihydroxylation
不对称双羟化反应
1.
Synthesis of quinine and cinchonine derivatives and their catalytic performance in asymmetric dihydroxylation;
奎宁和辛可宁衍生物的合成及其在不对称双羟化反应中的催化作用
2.
Application of the ligand-OsO_4 in the asymmetric dihydroxylation reaction of several olefins afforded corresponding chiral diols in yield of 91%~94% and 93% e.
OsO4-2用于催化烯烃的不对称双羟化反应,化学产率91%~94%,e。
3.
METHODS The C13 side chain of the taxol was synthesized via asymmetric dihydroxylation of trans-cinnamate,which was catalyzed by a kind of free recoverable and resued chiral ligand and OsO4.
方法在可回收非支载型手性配体的催化作用下,通过不对称双羟化反应合成紫杉醇C13侧链,对侧链的羟基和氨基进行保护后生成(4S,5R)-N-苯甲酰基-2-(4′-甲氧基)苯基-4-苯基-1,3-氧氮杂戊环-5-甲酸,进而和7-三乙基硅烷巴卡亭-Ⅲ缩合、去保护获得紫杉醇。
5)  asymmetric dihydroxylation(AD)
不对称双羟化反应(AD)
6)  asymmetric dihydroxylation
不对称双羟基化反应
1.
N,N'-Diferrocenylmethyl-(1S,2S)-1,2-diphenylethanediamine was synthesized by two steps from (1S,2S)-1,2-diphenylethanediamine and ferrocenealdehyde, and has been used as chiral ligand to asymmetric dihydroxylation of olefins.
(1S,2S)-1,2-二苯基乙二胺和甲酰基二茂铁经缩合和还原两步反应,以90%的产率合成了N,N'-二茂铁甲基-(1S,2S)-1,2-二苯基乙二胺,并以其为配体催化烯烃的不对称双羟基化反应,获得了较高的对映选择性(71%~86%ee)。
补充资料:双羟茶碱
药物名称:喘定

英文名:Diprophylline

别名: 丙羟基茶碱;二羟基醛茶碱;甘油茶碱;新噻林 ,二羟丙茶碱 ,喘定, 丙羟茶碱,奥苏芬;双羟茶碱
外文名:Diprophylline
适应症: 应用同氨茶碱,尤适用于伴有心动过速的哮喘病人。
用量用法: 口服:每次0.2g,1日3次。肌注:每次0.25~0.5g。静滴:用于严重哮喘发作,每日1~2g加于5%葡萄糖液2000~4000ml中静滴。
注意事项:
1.偶有口干、恶心、心悸、多尿等不良反应。 2.不宜与氨茶碱同用。 3.大剂量可致中枢兴奋,予服镇静药可防止。

规格:片剂:每片0.1g、0.2g。 注射液:0.25g(2ml)。





类别:平喘药\磷酸二酯酶抑制药
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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