✦ LIBER ✦

A Novel Asymmetric ent-Kaurane Dimer from Isodon rubescens var. rubescens

✍ Scribed by Quan-Bin Han; Zhen-Dan He; Chun-Feng Qiao; Hong-Xi Xu; Han-Dong Sun

Publisher: John Wiley and Sons
Year: 2005
Tongue: German
Weight: 77 KB
Volume: 88
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.200590059

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A novel asymmetric ent‐kaurane dimer, xindongnin P (1), was isolated from Isodon rubescens var. rubescens. Its structure was elucidated by detailed spectroscopic analysis. Compound 1 contains a tetrahydrofuran moiety whose formation leads to inversion of configuration at C(16). This differentiates 1 from known related dimers, which were isolated before from the Isodon genus. A likely biogenetic pathway from the alleged monomer precursor 3 is proposed.

📜 SIMILAR VOLUMES

Ent-Kaurane Diterpenoids from Isodon rub

Ent-Kaurane Diterpenoids from Isodon rubescens var. rubescens.

✍ Quan-Bin Han; Wei-Lie Xiao; Yun-Heng Shen; Han-Dong Sun 📂 Article 📅 2004 🏛 John Wiley and Sons ⚖ 14 KB 👁 1 views

## Abstract For Abstract see ChemInform Abstract in Full Text.

Ent-kaurane Diterpenoids from Isodon rub

Ent-kaurane Diterpenoids from Isodon rubescens var. lushanensis.

✍ Quan-Bin Han; Ma-Lin Li; Sheng-Hong Li; Yi-Kun Mou; Zhong-Wen Lin; Han-Dong Sun 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 85 KB 👁 2 views

ent-Kaurane Diterpenoids from Isodon rub

ent-Kaurane Diterpenoids from Isodon rubescens Var. lushiensis.

✍ Quanbin Han; Shenghong Li; Liyan Peng; Handong Sun 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 66 KB 👁 2 views

An Asymmetric ent-Kauranoid Dimer from I

An Asymmetric ent-Kauranoid Dimer from Isodon rubescens var. lushanensis.

✍ Quan-Bin Han; Yang Lu; Li Wu; Zhen-Dan He; Chun-Feng Qiao; Hong-Xi Xu; Qi-Tai Zh 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 12 KB 👁 1 views

## Abstract For Abstract see ChemInform Abstract in Full Text.

Rubescensins S and T: Seco-ent-Kaurane D

Rubescensins S and T: Seco-ent-Kaurane Diterpenoids from Isodon rubescens var. taihangensis.

✍ Quan-Bin Han; Rong-Tao Li; Ji-Xia Zhang; Han-Dong Sun 📂 Article 📅 2004 🏛 John Wiley and Sons ⚖ 12 KB 👁 1 views

Rubescensins S and T: Seco-ent-Kaurane D

Rubescensins S and T: Seco-ent-Kaurane Diterpenoids from Isodon rubescens var. taihangensis

✍ Quan-Bin Han; Rong-Tao Li; Ji-Xia Zhang; Han-Dong Sun 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 German ⚖ 112 KB

## Abstract Two new diterpenoids, rubescensin S (=(1__α__,6__β__,14__β__)‐7__α__,20‐epoxy‐1,7,14‐trihydroxy‐16‐oxo‐15,16‐seco‐__ent__‐kauran‐6,15‐olide; **1**) and rubescensin T (=(1__α__,6__β__,11__β__,20__S__)‐7__α__,20‐epoxy‐1,6,7‐trihydroxy‐20‐methoxy‐8,15‐seco‐__ent__‐kaur‐16‐en‐11,15‐olide; *