METHODS OF MAKING HIGH ENANTIOSELECTIVE SECONDARY ALCOHOLS
A new process to synthesis of compound OBI-3424 R-form and S-form products is provided. The "R-form" compound OBI-3423 was first synthesized with 48% overall yield from compound OBI-3424-5 by installation of the labile phosphate motif at later stage. The stereo chemistry is established by 5 steps chemo-enzyme combination synthesis to afford 99% optical purity, After then, the "S-form" compound OBI-3424 is prepared with improving overall yield of 54% from compound OBI-3424-5. The stereo chemistry is established by 4 steps combination of chemo-enzyme synthesis with excellent optical purity of 99%.
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Paragraph 0072; 0073
(2020/09/08)
(R)- AND (S)-1-(3-(3-N,N-DIMETHYLAMINOCARBONYL)PHENOXYL-4-NITROPHENYL)-1-ETHYL-N,N'-BIS (ETHYLENE)PHOSPHORAMIDATE, COMPOSITIONS AND METHODS FOR THEIR USE AND PREPARATION
Provided herein are optically active compounds of the formulae (ii); and (III) and pharmaceutical compositions thereof. Also provided herein are processes of making these compounds and resolving the racemic mixture or the enrichment of same with in one of
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Paragraph 0061-0063
(2017/06/12)
DNA ALKYLATING AGENTS
Provided herein are compounds of formula I: wherein the variables are defined herein, processes of making them, and methods of treating cancer comprising administering such compounds.