94930-46-8Relevant articles and documents
Chiral Bicyclic Imidazole-Catalyzed Acylative Dynamic Kinetic Resolution for the Synthesis of Chiral Phthalidyl Esters
Zhou, Muxing,Gridneva, Tatiana,Zhang, Zhenfeng,He, Ende,Liu, Yangang,Zhang, Wanbin
supporting information, p. 1641 - 1645 (2020/11/30)
Utilizing a chiral bicyclic imidazole organocatalyst and adopting a continuous injection process, an alternative route has been developed for the efficient synthesis of chiral phthalidyl ester prodrugs via dynamic kinetic resolution of 3-hydroxyphthalides through enantioselective acylation (up to 99 % ee). The computational studies suggest a general base catalytic mechanism differing from the widely accepted nucleophilic catalytic mechanism. The structure analysis of the key transition states shows that the CH-π interactions and not the previously considered cation/π-π interactions between the catalyst and substrate is the dominant factor giving rise to the observed stereocontrol.
NEW COMPOUNDS I/418
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Page/Page column 37, (2008/06/13)
There is provided compounds of formula I, wherein R1 to R7 have meanings given in the description, which are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.
1-fluoro, 4-fluoro, and 1,4-difluoro-2'-halo anthracycline antibiotics
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, (2008/06/13)
Anthracycline antibiotics represented by the formula (I) STR1 wherein R is hydrogen or hydroxyl, one of X and Y is fluorine and the other is hydrogen or both X and Y are fluorine, and S is a 2-halo sugar moiety; pharmaceutical preparations containing the same; and a method for inhibiting the growth of mammalian tumors are disclosed.