Gardenia jasminoides, (common gardenia, cape jasmine or cape jessamine) is a fragrant flowering evergreen tropical plant, a favorite in gardens worldwide. It originated in Asia and is most commonly found growing in Vietnam, Southern China, Taiwan, Japan and India. With its shiny green leaves and fragrant white summer flowers, it is widely used in gardens in warm temperate and subtropical climates.

Iridoids are one of the most widely distributed secondary metabolites in higher plants. They are pharmacologically active principles in various medicinal plants and key intermediates in the biosynthesis of monoterpenoid indole alkaloids as well as quinoline alkaloids. Although most iridoids are present as 1-O-glucosides, the glucosylation step in the biosynthetic pathway has remained obscure.

Evidence of Gardenia jasminoides in cultivation in China dates to the Song Dynasty (960-1279 AD), where both wild and double-flowered forms have been depicted in paintings.