Oxazolidine Synthesis by Complementary Stereospecific and Stereoconvergent Methods
作者:Michael B. Shaghafi、Robin E. Grote、Elizabeth R. Jarvo
DOI:10.1021/ol202068p
日期:2011.10.7
stereospecific and stereoconvergent reactions for enantioselective synthesis of 1,3-oxazolidines are reported. In the presence of a rhodium catalyst, reaction of enantioenriched butadiene monoxide with aryl imines is stereospecific (99% ee). Alternatively, the reaction of racemic butadiene monoxide, in the presence of a chiral palladium or nickel catalyst, provides an enantioselective synthesis of 1,3-oxazolidines
Small-Molecule Inhibitors of Protein Geranylgeranyltransferase Type I
作者:Sabrina Castellano、Hannah D. G. Fiji、Sape S. Kinderman、Masaru Watanabe、Pablo de Leon、Fuyuhiko Tamanoi、Ohyun Kwon
DOI:10.1021/ja070274n
日期:2007.5.1
Small molecules that inhibit the geranylgeranylation of K-Ras4B and RhoA by protein geranylgeranyltransferase type I (GGTase-I) were identified from chemical genetic screens of heterocycles synthesized through phosphine catalysis of allenes. To further improve the efficacy of the GGTase-I inhibitors (GGTIs), 4288 related compounds bearing core dihydropyrrole/pyrrolidine and tetrahydropyridine/piperidine scaffolds were synthesized on SynPhase lanterns in a split-pool manner through phosphine-catalyzed [3 + 2] and [4 + 2] annulations of resin-bound allenoates. Testing of the 4288 analogues resulted in several GGTIs exhibiting submicromolar IC50 values. Because proteins such as Ras and Rho GTPases are implicated in oncogenesis and metastasis, these GGTIs might ultimately lead to the development of novel antitumor therapeutics.
INHIBITORS OF PROTEIN PRENYLTRANSFERASES
申请人:Tamanoi Fuyuhiko
公开号:US20100063114A1
公开(公告)日:2010-03-11
The present invention is directed to novel compounds. These compounds can be useful in inhibiting the activity of GGTase I. The compounds can also be used as anti-cancer therapeutics including as part of methods for treating cancer, in assays, and in kits.