Photocleavable protecting groups and methods for their use
4 Assignments
0 Petitions
Accused Products
Abstract
Novel compounds are provided which are useful as linking groups in chemical synthesis, preferably in the solid phase synthesis of oligonucleotides and polypeptides. These compounds are generally photolabile and comprise protecting groups which can be removed by photolysis to unmask a reactive group. The protecting group has the general formula Ar—C(R1)(R2)—O—C(O)— wherein: Ar is an optionally substituted fused polycyclic aryl or heteroaromatic group or a vinylogous derivative thereof;
- R1 and R2 are independently H, optionally substituted alkyl, alkenyl or alkynyl, optionally substituted aryl or optionally substituted heteroaromatic, or a vinylogous derivative of the foregoing; and
- X is a leaving group, a chemical fragment linked to Ar—C(R1)(R2)—O—C(O)— via a heteroatom, or a solid support; provided that when Ar is 1-pyrenyl and R1 and R2 are H, X is not linked to Ar—C(R1)(R2)—O—C(O)— via a nitrogen atom. Preferred embodiments are those in which Ar is a fused polycyclic aromatic hydrocarbon and in which the substituents on Ar, R1 and R2 are electron donating groups. A particularly preferred protecting group is the “PYMOC” protecting group, pyrenylmethyloxycarbonyl, where Ar is pyrenyl and R1 and R2 are H. Also provided is a method of forming, from component molecules, a plurality of compounds on a support, each compound occupying a separate predefined region of the support, using the protected compounds described above.
33 Citations
38 Claims
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1-10. -10. (canceled)
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11. A method of attaching a molecule with a reactive site to a support comprising the steps of:
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(a) providing a support with a reactive site;
(b) binding a molecule to the reactive site, said first molecule comprising a masked reactive site attached to a photolabile protecting group of the formula Ar—
C(R1)(R2)—
O—
C(O)—
, wherein;
Ar is an optionally substituted fused polycyclic aryl or heteroaromatic group or a vinylogously substituted derivative of the foregoing;
R1 and R2 are independently h, optionally substituted alkyl, alkenyl or alkynyl, or optionally substituted aryl or heteroaromatic group or a vinylogously substituted derivative of the foregoing;
to produce a derivatized support having immobilized thereon the molecule attached to the photolabile protecting group; and
(c) removing the photolabile protecting group to provide a derivatized support comprising the molecule with an unmasked reactive site immobilized thereon;
- View Dependent Claims (12, 13, 14, 15, 16, 20, 21, 22, 24, 25)
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26. A method of forming, from component molecules, a plurality of compounds on a support, each compound occupying a separate predefined region of the support, said method comprising the steps of:
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(a) activating a region of the support;
(b) binding a molecule to the first region, said molecule comprising a masked reactive site linked to a photolabile protecting group of the formula Ar—
C(R1)(R2)—
O—
C—
(O)—
, wherein;
Ar is an optionally substituted fused polycyclic aryl or heteroaromatic group or a vinylogously substituted derivative of the foregoing;
R1 and R2 are independently H, optionally substituted alkyl, alkenyl or alkynyl, or optionally substituted aryl or heteroaromatic group or a vinylogously substituted derivative of the foregoing;
(c) repeating steps (a) and (b) on other regions of the support whereby each of said other regions has bound thereto another molecule comprising a masked reactive site linked to the photolabile protecting group, wherein said another molecules may be the same or different from that used in step (b);
(d) removing the photolabile protecting group from one of the molecules bound to one of the regions of the support to provide a region bearing a molecule with an unmasked reactive site;
(e) binding an additional molecule to the molecule with an unmasked reactive site;
(f) repeating steps (d) and (e) on regions of the support until a desired plurality of compounds is formed from the component molecules, each compound occupying separate regions of the support. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38-65. -65. (canceled)
Specification