T. Maoka et al., A new retro-carotenoid from the petals of the Californian yellow poppy Eschscholtzia californica, J NAT PROD, 63(9), 2000, pp. 1288-1289
A new retro-carotenoid (1) isolated from the petals of the Californian yell
ow poppy, Eschscholtzia californica, was determined to be (all-E)-(3S, 5R,
3'S)-4',5-retro-beta,beta-carotene-3,5,3'-triol by spectroscopic analysis.