ヌカ油中のフェルラ酸エステルの研究 (第2報)
NMRおよび質量スペクトルによる分析
1969 年 18 巻 2 号 p. 63-67
詳細
1969 年 18 巻 2 号 p. 63-67
The authors reported in the previous paper the confirmation of existence of 7 ferulates..... 1. campesteryl-, 2. stigmasteryl-, 3. β-sitosteryl-, 4. cycloartanyl-, 5, cycloartenyl-, 6. 24-methylenecycloartanyl- and 7. an unknown triterpenyl-ferulates..., ..in rice-bran oil by means of TLC and GLC.
The present report relates to the further confirmation of these ferulates (exclusive of the 2nd, the 4th and the 7th.) and their unsaponifiable matters by means of NMR and Mass Spectrography. Comparing to data of the chemical shifts of C-18 and C-19 protons in androstanes listed in the report of Bhacca et al., with those of sterines and triterpenes obtained by us, the conformations of the free triterpenes and the triterpenyl parts in their ferulates are not analogous, though the free sterins and the steryl parts in their ferulates are coincident.
