Abstract: The present invention is directed to RNA monomers comprising O-acetal levulinyl protecting groups at the 2? and/or the 5?-hydroxy functionalities of the ribose moiety. Said monomers may be incorporated into oligoribonucleotides or RNA polynucleotides. Furthermore, the invention is directed to methods for the synthesis of said RNA monomers, oligoribonucleotides and RNA polynucleotides, as well as methods for their deprotection and methods for the use of said compounds and compositions comprising said compounds. In particular, such compounds and compositions comprising them are used in methods for light-directed synthesis of RNA microarrays.

Abstract: The present invention is directed to RNA monomers comprising O-acetal levulinyl protecting groups at the 2? and/or the 5?-hydroxy functionalities of the ribose moiety. Said monomers may be incorporated into oligoribonucleotides or RNA polynucleotides. Furthermore, the invention is directed to methods for the synthesis of said RNA monomers, oligoribonucleotides and RNA polynucleotides, as well as methods for their deprotection and methods for the use of said compounds and compositions comprising said compounds. In particular, such compounds and compositions comprising them are used in methods for light-directed synthesis of RNA microarrays.

Abstract: The present invention is directed to RNA monomers comprising O-acetal levulinyl protecting groups at the 2? and/or the 5?-hydroxy functionalities of the ribose moiety. Said monomers may be incorporated into oligoribonucleotides or RNA polynucleotides. Furthermore, the invention is directed to methods for the synthesis of said RNA monomers, oligoribonucleotides and RNA polynucleotides, as well as methods for their deprotection and methods for the use of said compounds and compositions comprising said compounds. In particular, such compounds and compositions comprising them are used in methods for light-directed synthesis of RNA microarrays.

Abstract: The invention provides a method of step-wise synthesizing copies of polymers of potentially different units on at least two solid carrier surfaces simultaneously in a preselected pattern, comprising providing a layered synthesis arrangement comprising a transparent first solid carrier and a second solid carrier, wherein said first and second carrier each contain an active surface to which polymer units can be applied dependent on reactions of photosensitive moieties, projecting light in a preselected pattern onto the first and second carrier surface, wherein the light passes through the transparent first solid carrier, whereby photons react with photosensitive moieties thereby activating the first surface, said pass-through light further projects onto the second carrier surface, whereby photons react with photosensitive moieties thereby activating the second surface, applying a fluid comprising a polymer unit to the first and second active surfaces and binding the polymer unit to the exposed sites of said pat

Abstract: The present invention is directed to RNA monomers comprising O-acetal levulinyl protecting groups at the 2? and/or the 5?-hydroxy functionalities of the ribose moiety. Said monomers may be incorporated into oligoribonucleotides or RNA polynucleotides. Furthermore, the invention is directed to methods for the synthesis of said RNA monomers, oligoribonucleotides and RNA polynucleotides, as well as methods for their deprotection and methods for the use of said compounds and compositions comprising said compounds. In particular, such compounds and compositions comprising them are used in methods for light-directed synthesis of RNA microarrays.