Provided is a compound useful for the prophylaxis or treatment of cancer.
The present invention relates to a compound represented by formula (I):
wherein each symbol in the formula is as defined in the specification, or a salt thereof or a prodrug thereof, which is useful for the prophylaxis or treatment of cancer.
An Efficient Method for Removal of Ruthenium Byproducts from Olefin Metathesis Reactions
作者:Jong Hyun Cho、B. Moon Kim
DOI:10.1021/ol027423l
日期:2003.2.1
[GRAPHICS]Sequential treatment of the ring-closing metathesis reaction products with silica gel, activated carbon (50 equiv wt relative to the crude products), and column chromatography on silica gel efficiently removed dark brown ruthenium byproducts from the reaction mixture. After this treatment, colorless compounds could be obtained with a ruthenium level of 0.06-0.53 mug per 5 mg of product.
Synthesis of Conformationally Restricted Amino Acids and Peptides Employing Olefin Metathesis