The present invention provides a photolabile protecting group that can be removed by light irradiation under mild conditions. More specifically, the present invention provides a method comprising protecting a reactive functional group (e.g., a hydroxyl group, amino group, carboxyl group, carbonyl group, phosphodiester group, etc.) by the photolabile protecting group, and then removing the photolabile protecting group simply by light irradiation under neutral conditions.
The present invention relates to a compound represented by Formula (3):
wherein Ar
1
is an optionally substituted aromatic or heteroaromatic ring, Ar
2
is an optionally substituted aryl or heteroaryl group, X is a leaving group, and n is an integer of 1 or 2; and a method of protecting and deprotecting an amino group etc. using the compound.
Synthesis of 3-Iodo Derivatives of Flavones, Thioflavones and Thiochromones
作者:Fang Jie Zhang、Yu Lin Li
DOI:10.1055/s-1993-25904
日期:——
The title compounds, 2-aryl-3-iodo-4H-1-benzopyrans and 2-alkyl-or 2-aryl-3-iodo-4H-1-benzothiopyrans, were prepared by reaction of the corresponding heterocyclic derivatives with the iodine-cerium(IV) ammonium nitrate system under mild conditions. The scope and proposed mechanism of the reaction were also demonstrated.
Study on the Synthesis of Some New Biflavonoids. VIII. A New Synthesis of C<sub>3</sub>-Linked Biflavones, Bithioflavones and Bithiochromones
作者:Yu Lin Li、Fang Jie Zhang
DOI:10.1080/00397919308018584
日期:1993.4
Abstract Reactions of the 3—iodo derivatives of flavones, thioflavones and thiochromones with finely divided copper at 200–210°C gave the title compounds respectively. Thus a new way to these compounds was provided.