Sugar-derivatives of potassium lespedezate, artificial leaf-opening substances of Lespedeza cuneata G.!Don, designed for the bioorganic studies of nyctinasty

被引：17

作者：

Ueda, M ^{[1
]}

Sawai, Y ^{[1
]}

Yamamura, S ^{[1
]}

机构：

[1] Keio Univ, Fac Sci & Technol, Dept Chem, Yokohama, Kanagawa 2238522, Japan

来源：

TETRAHEDRON LETTERS | 1999年 / 40卷 / 19期

关键词：

plants; natural products; biologically active compounds; glycoside; glycosidation;

D O I：

10.1016/S0040-4039(99)00602-4

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Potassium lespedezate (1) is the leaf-opening substance of a nyctinastic plant, Lespedeza cuneata G. Don. We synthesized two sugar-derivatives of 1, potassium galactolespedezate (2) and mannoisolespedezate (3). Both 2 and 3 were quite effective for the leaf-opening of L. cuneata. at 8 x 10(-7) M, as strong as 1. However, 1 kept the leaf open only for a few days; on the other hand, 2 and 3 kept the leaf open after a week at that concentration. Thus it is assumed that 2 and 3 could not be hydrolyzed by beta-glucosidase in the plant body, and are therefore potentially useful molecular probes for the studies of the control of the nyctinastic leaf-movement by a biological clock. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：3757 / 3760

页数：4

共 17 条

[1]

BLOCK K, 1974, J CHEM SOC P2, P293

[2]

BUNNING E, 1973, PHYSL CLOCK

[3]

DARWIN C, 1982, POWER MOVEMENT PLANT

[4] ISOLATION OF POTASSIUM CHELIDONATE AS A BIOACTIVE SUBSTANCE CONCERNING WITH CIRCADIAN-RHYTHM IN NYCTINASTIC PLANTS [J].