Phytoceramides and acylated phytosterol glucosides from Pterospermum acerifolium Willd. seed coat and their osteogenic activity - Dixit, P; Chand, K; Khan, M P; Siddiqui, J A; Tewari, D; Ngueguim, F T; Chattopadhyay, N; Maurya, R (Phytochemistry, 2012)