摘要:
The present invention relates to a novel crystalline polymorph of (¾)-2-amino-4-((l-((2R,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-2-oxo-l,2- dihydropyrimidin-4-yl)amino)-4-oxobutanoic acid (also known as BST-236, Astarabine® or aspacytarabine), processes of preparation thereof, and uses thereof for the treatment of neoplastic diseases.