The provision of novel compounds that are included in the blue rose. Included in the blue rose, the following general formula The novel compounds of the present invention, (I): {Wherein it must be a group as described in claim 1, R 1 is, to form either a -OH, or R 1 and R 2 is a -O- together to R 2. I have a chemical structure represented by}. And parts thereof rose plant comprising the novel compounds are also provided.青いバラに含まれる新規化合物の提供。本発明に係る新規化合物は、青いバラに含まれ、下記一般式(I):{式中、R1は、請求の範囲1に記載の基であり、かつ、R2は-OHであるか、又はR1とR2は一緒になって-O-を形成する。}で表される化学構造を有する。該新規化合物を含むバラ植物及びその部分も提供される。