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(R
1
)(R
2
)—O—C(O)— wherein: Ar is an optionally substituted fused polycyclic aryl or heteroaromatic group or a vinylogous derivative thereof;
R
1
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(R
1
)(R
2
)—O—C(O)— via a heteroatom, or a solid support; provided that when Ar is
1
-pyrenyl and R
1
and R
2
are H, X is not linked to Ar—C(R
1
)(R
2
)—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, R
1
and R
2
are electron donating groups. A particularly preferred protecting group is the “PYMOC” protecting group, pyrenylmethyloxycarbonyl, where Ar is pyrenyl and R
1
and R
2
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.
提供了一种新型化合物,可用作
化学合成中的连接基团,特别是在寡核苷酸和
多肽的固相合成中使用。这些化合物通常是光致的,并包含可通过光解除保护基的保护基团,以暴露出反应性基团。保护基团的一般公式为Ar—C(R1)(R2)—O—C(O)—,其中:Ar是可选择的融合多环芳香族或杂芳族基团,或其
乙烯衍
生物;R1和R2是独立的H、可选择的取代烷基、烯基或炔基、可选择的取代芳基或可选择的取代杂芳基,或其
乙烯衍
生物;X是离去基团、通过杂原子与Ar—C(R1)(R2)—O—C(O)—连接的
化学片段或固体支持物;但当Ar为1-
芘基且R1和R2为H时,X不通过氮原子与Ar—C(R1)(R2)—O—C(O)—连接。首选实施例是Ar为融合多环芳香族烃,且Ar、R1和R2上的取代基为电子供体基团。一种特别优选的保护基团是“PYMOC”保护基团,即
芘基甲氧羰基,其中Ar为
芘且R1和R2为H。还提供了一种方法,使用上述保护化合物,从组分分子在支持物上形成多个化合物,每个化合物占据支持物上的单独预定义区域。