Pharmablock (Nanjing) R&D Co., Ltd. Patent applications |
Patent application number | Title | Published |
20160115166 | PYRROLO[2, 1-F] [1,2,4]TRIAZINE DERIVATIVE AND USE THEREOF FOR TREATING TUMORS - Disclosed are a pyrrolo[2,1-f][1,2,4]triazine derivative of Formula (I) and use thereof for treating tumors. The compound has remarkable antiproliferative activity for a variety of human tumor cell lines, and is useful for treating cancers, especially solid tumors such gastric cancer, lung cancer, liver cancer, breast cancer, colon cancer, prostatic cancer, and oral cancer. | 04-28-2016 |
20140309425 | METHOD FOR SYNTHESIZING 1-(2-FLUOROBENZYL)-1H-PYRAZOLO[3,4-B]PYRIDINE-3-FORMAMIDINE HYDROCHLORIDE - The present invention relates to the field of chemical synthesis, and in particular to a method for synthesizing 1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-formamidine hydrochloride, which is an important intermediate of Riociguat that is an anti-thromboembolic-disease medicine. The method is characterized in that: 3-iodo-1H-pyrazolo[3,4-b]pyridine is used as a raw material; the raw material is reacted with fluorobenzyl bromide to form a compound (10); the compound (10) is reacted with zinc cyanide to form a compound (6); the compound (6) is reacted with sodium methoxide, ammonium chloride, acetic acid and methanol to form a compound (8); and the compound (8) is reacted with chlorine hydride gas to form 1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-formamidine hydrochloride. The method has the characteristics of cheap and readily available raw materials, high yield, mild reaction conditions and the like, and is a synthesis method having a large-scale preparation value. | 10-16-2014 |