| pubmed-article:21769064 | pubmed:abstractText | Three new phytoecdysteroid compounds, named niuxixinsterone A (1), B (2) and C (3) with acetal functions in the side-chain were isolated from Achyranthes bidentata Bl. The structures were established as (20R,22R,24S)-20-O,22-O-(5'-hydroxymethyl)-furfurylidene-2?,3?,14?,25-tetrahydroxy-5?-ergost-7-en-6-one (1), (20R,22R)-20-O,22-O-(5'-hydroxymethyl)-furfurylidene-2?,3?,25-trihydroxy-14?-methyl-18-nor-5?-cholesta-7,12-dien-6-one (2) and (20R,22R,25R)-20-O,22-O-(5'-hydroxymethyl)-furfurylidene-2?, 3?,5?,14?,26-pentahydroxycholest-7-en-6-one (3) by means of spectroscopic evidence. | lld:pubmed |
