摘要:
A process for the preparation of 2',3' dideoxynucleosides, 2'-deoxynucleosides, and 2',3'-dideoxy-2',3'-didehydronucleosides is provided that includes the synchronous addition of a stereoselecting moiety (a directing group) and a protected purine or pyrimidine base to 5-(S)-6-(protected-oxy)-4,5-dihydrofuran in the presence of a Lewis acid. This one vessel reaction eliminates the need to separately prepare and purify a 2'-substituted ribose derivative that in a second step is condensed with a purine or pyrimidine base. The process can be easily modified to increase the stereoselectivity of formation of the .beta.-anomeric nucleoside as necessary.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to a compound of Formula I: or a pharmaceutically acceptable salt thereof, as disclosed herein. The present invention also relates to pharmaceutical compositions comprising said compounds and to methods of using said compounds and compositions for modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
摘要:
The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.