摘要:
The present invention provides a method which enables the simple, economical and high-yield production which is a key intermediate of antidiabetic drug Januvia.
摘要:
The present invention provides a method which enables the simple, economical and high-yield production which is a key intermediate of antidiabetic drug Januvia.
摘要:
The present invention relates to an improved method for preparing dipeptidyl peptidase-IV inhibitor and intermediate. The present invention is able to reduce preparation costs by using low cost reagents on reaction and is able to be used in mass production by improving yield.
摘要:
The present invention relates to new aziridine derivative that is represented by following general chemical formulae (la) or (lb), and to their preparation method. In the above mentioned chemical formulae, R2 and R3 can be same or different, and they are hydrogen, low-quality alkyl or cycloalkyl respectively; R4 can be selected among hydrogen, alkyl, aril, or amino protective group, and amino protective group is, for example, (PH)3C, FMOC (9-fluorenylmethyl oxycarbonyl), alkoxycarbonyl, ariloxycarbonyl, aralkyloxycarbonyl and R5CO, R5SO2 where R5 is alkyl or aril or aralkyl.
摘要翻译:本发明涉及由以下一般化学式(Ia)或(Ib)表示的新的氮丙啶衍生物及其制备方法。 在上述化学式中,R 2和R 3可以相同或不同,它们分别是氢,低质量烷基或环烷基; R 4可以选自氢,烷基,芳基或氨基保护基,氨基保护基是例如(PH)3 C,FMOC(9- 芴基甲基氧羰基),烷氧基羰基,芳氧基羰基,芳烷氧基羰基和R 5 CO,R 5 SO 2,其中R 5是 烷基或芳基或芳烷基。
摘要:
The present invention relates to a new aziridine derivative that is represented herein by general chemical formulae (Ia) or (Ib), and to their preparation method. In the said chemical formulae, R2 and R3 can be the same or different, and they are hydrogen, low-quality alkyl or cycloalkyl respectively; R4 can be selected among hydrogen, alkyl, aryl, or amino protective group; and amino protective group is, for example, (Ph)3C, and FMOC(9-fluorenylmethyloxycarbonyl), alkoxycarbonyl, aryloxycarbonyl, aralkyloxycarbonyl and R5CO, R5SO2 where R5 is alkyl, aryl or aralkyl.
摘要翻译:本发明涉及一般化学式(Ia)或(Ib)表示的新的氮丙啶衍生物及其制备方法。 在所述化学式中,R 2和R 3可以相同或不同,它们分别是氢,低质量烷基或环烷基; R 4可以选自氢,烷基,芳基或氨基保护基; 和氨基保护基是例如(Ph)3 C,和FMOC(9-芴基甲氧基羰基),烷氧基羰基,芳氧基羰基,芳烷氧基羰基和R 5 CO,R SUB 芳基或芳烷基,其中R 5是烷基,芳基或芳烷基。