二倍半萜

背景：天然二倍半萜类化合物是一类重要的萜类化合物。

Background : Sesterterpene is an important class of terpenoids .

其种子中含有脂肪油、甾醇等成分，叶中多为二萜、倍半萜、黄酮等化合物。

The seed is rich in fatty oil and sterol . The components in the leaves of the genes Torreya plants are sesquiterpenoids , diterpenoids and flavonoids .

β-二氢沉香呋喃倍半萜的~（13）cNMR取代规律

The ~ ( 13 ) C NMR Substituted Rules of β - Dihydroagarofuran

大戟属植物中二萜酯和倍半萜甙结构的2DNMR研究

2D NMR studies on diterpene ester and sesquiterpene Glucoside from the genus Euphorbia

二氢沉香呋喃倍半萜的2DNMR研究

Study of 2D NMR of dihydroagarofuran sesquiterpenes

利用高分辨快原子轰击质谱（HR-FABMS），以（甘油+氯化钠）为基质测定了9个新的β-二氢沉香呋喃倍半萜多酯和生物碱的HR-FABMS。

The HR-FABMS spectra of nine new β - dihydroagarofuran sesquiterpene polyol esters and alkaloids were analyzed with glycerol plus sodium chloride as matrix .

海绵中含有多种多样的萜类化合物，包括单萜、倍半萜、二萜、二倍半萜和三萜。

The marine sponges are a rich source of terpenoids including monoterpenoids , sesquiterpenoids , diterpenoids , sesterterpenoids and triterpenoids .