摘要:
A method for preparing a phosphitylated compound comprising the step of:—reacting a hydroxyl containing compound with a phosphitylating agent in the presence of an activator having the formula (I) wherein R=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl R1, R2=either H or form a 5 to 6-membered ring together. X1, X2=independently either N or CH Y═H or Si(R4)3, with R4=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl B=deprotonated acid. The hydroxyl containing compound is preferably a sugar moiety or a nucleoside or an oligomer derived therefrom.
摘要:
A method for preparing an oligonucleotide comprising the steps ofa) providing a hydroxyl containing compound having the formula (A), b) reacting said compound with a phosphitylating agent in the presence of an activator (activator I) having the formula (I) to prepare a phosphitylated compound; and c) reacting said phosphitylated compound without isolation with a second compound having the formula (A) wherein R5, R3, R2, B are independently selected, but have the same definition as above in the presence of an activator II different from activator I.
摘要:
A method for preparing an oligonucleotide comprising the steps of a) providing a hydroxyl containing compound having the formula (A), b) reacting said compound with a phosphitylating agent in the presence of an activator (activator I) having the formula (I) to prepare a phosphitylated compound; and c) reacting said phosphitylated compound without isolation with a second compound having the formula (A) wherein R5, R3, R2, B are independently selected, but have the same definition as above in the presence of an activator II different from activator I.
摘要:
A method for preparing a phosphitylated compound comprising the step of:—reacting a hydroxyl containing compound with a phosphitylating agent in the presence of an activator having the formula (I) wherein R=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl R1, R2=either H or form a 5 to 6-membered ring together. X1, X2=independently either N or CH Y=H or Si(R4)3, with R4=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl B=deprotonated acid. The hydroxyl containing compound is preferably a sugar moiety or a nucleoside or an oligomer derived therefrom.
摘要:
A method for preparing a phosphitylated compound comprising the step of: -reacting hydroxyl containing compound with a phosphitylating agent in the presence of an activator having the formula (I) wherein R=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl R1, R2=either H or form a 5 to 6-membered ring together. X1, X2=independently either N or CH Y═H or Si(R4)3, with R4=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl B=deprotonated acid. The hydroxyl containing compound is preferably a sugar moiety or a nucleoside or an oligomer derived therefrom.