Thre coumarin derivatives, which stimulate collagen biosynthesis in human fibroblasts were isolated from Angelicadahuricacoumarin derivatives were identified as 5-benzofuranacrylic acid, 6,7-dihydroxy-4-(3-methyl-2-butenyl)-δ-lactone (prangeni-din), ...
Thre coumarin derivatives, which stimulate collagen biosynthesis in human fibroblasts were isolated from Angelicadahuricacoumarin derivatives were identified as 5-benzofuranacrylic acid, 6,7-dihydroxy-4-(3-methyl-2-butenyl)-δ-lactone (prangeni-din), 5-benzofuranacrylic acid, 6,7-dihydroxy-4-methoxy-δ-lactone (8-hydroxybergapten) and 5-benzofuranacrylic acid, 8-hydroxypsoralen(xanthotoxol) from their spectral data.