Synthesis Of Photosensitive Peptides And Research On Photocycloadditon

Photoreactions are important approaches to novel molecules with complex structure. Other applications of light as a green energy source in photocatalysis, solar cell etc have been of great research interests.Photosensitive molecules such as such as spiropyran, spirooxazine, fulgide, thiophene ethylene, azobenzene have been widely used in organic synthesis and biological studies.Hydrogel is a very useful "soft matter" which has found many applications as functional biomaterials. The hydrogels formed by short peptide have the advantages of easy synthesis, excellent biological compatibility, non-toxic metabolites and important biological functions. Short peptides linked with spiropyran or spirooxazine have been synthesized as candidates for the construction of photosensitive hydrogels. Medium ring lactones have been found in an expansive range of natural compounds, such as the ellagitannin family. The synthesis of these functionalized medium ring lactones is still a challenge even if there are lots of available ways to reach. One green and facile approach to medium ring lactones has been discovered in our group and based on the photooxidation of the [4+2] photocycloadducts of diones and alkenes. In this paper, I have synthesized the photocycloadducts of 9,10-phenanthrenedione or 1,10-phenanthroline-5,6-dione with different olefins to provide the material for photooxidation.