Citation: Shao Nong CHEN, Shao Yuan CHEN, Jian Min YUE, Zhong Wen LINGuo Wei QIN, Han Dong SUN, Yao Zu CHEN. Three New Diterpenoids from Isodon Eriocalyx[J]. Chinese Chemical Letters, ;1998, 9(11): 1025-1028. shu

Three New Diterpenoids from Isodon Eriocalyx

1.
Shanghai Institute of Materia Medica, Academia Sinica, Shanghai 200031;
2.
The Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Kunmi 650204;
3.
department of Chemistry, Zhejiang University, Hangzhou 310027;
4.
State Key Laboratory of Applied Organic Chemistry, Lanzhou University Lanzhou 730000

Received Date: 27 April 1998

Three new diterpenoids, eriocalyxins C-E, were isolated from Isodon eriocalyx. Their structures were elucidated as 6β-hydroxy-15β-acetoxy-3α, 20-epoxy-16β, 17-epoxy-ent-kaur-1, 7-dione; la, 7β-dihydroxy-6β, 15β-diacetoxy-7, 20-epoxy-ent-kaur-16-ene; and 15β-acetoxy-l, 6-dioxo-6, 7-seco-ent-kaur-2, 16-dien-7, 20-olide by means of spectroscopic methods, including two-dimensional NMR techniques.
- Isodon eriocalyx,
- Labiatae,
- ent-kaurane diterpenoids,
- eriocalyxins C-E
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