Triterpene and coumarins from Skimmia laureola

被引：25

作者：

Atta-ur-Rahman ^{[1
]}

Sultana, N ^{[1
]}

Khan, MR ^{[1
]}

Choudhary, MI ^{[1
]}

机构：

[1] Univ Karachi, HEJ Res Inst Chem, Int Ctr Chem Sci, Karachi 75270, Pakistan

来源：

NATURAL PRODUCT LETTERS | 2002年 / 16卷 / 05期

关键词：

Skimmia laureola; Rutaceae; cycloartane triterpene; coumarin; methyl cyclolaudenol;

D O I：

10.1080/10575630290020613

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In the course of our studies on the chemical constituents of the leaves of Skimmia laureola [261, a new triterpene O-methyl cyclolaudenol (1) and a new coumarin, (+)-7-methoxy-6-(2'R-methoxy-3'-hydroxy-3'-methyl butyl) coumarin (2) were isolated. In addition five known coumarins, isogospherol (3), heraclenol (4), 5,8-dimethoxy coumarin-2H-1-benzopyran-2-one (5), 7-methoxy-6[2'-oxo-3'-methyl butyl] coumarin (6), and (+)-ulopterol (7) were also isolated for the first time from this plant. The structures were identified by spectroscopic studies and the stereochemistry at C-2' in compounds 3 and 4 were established by Horeau's procedure.

引用

页码：305 / 313

页数：9

共 26 条

[1] FERN CONSTITUENTS - CYCLOARTANE TRITERPENOIDS AND ALLIED COMPOUNDS FROM POLYPODIUM-FORMOSANUM AND POLYPODIUM-NIPONICUM [J].

AGETA, H ;

ARAI, Y .

PHYTOCHEMISTRY, 1984, 23 (12) :2875-2884

[2]

Attar-ur-Rahman, 1996, SOLVING PROBLEMS NMR, P376

[3]

AttaUrRahman, 1989, ONE 2 DIMENTIONAL NM, P406

[4]

ATTAURRAHMAN N, 1988, NAT PROD LETT, V12, P223

[5]

BENDALL MR, 1983, J MAGN RESON, V53, P272, DOI 10.1016/0022-2364(83)90032-X

[6]

CROFT JK, 1968, AUST J CHEM, V28, P2019

[7] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA .11. C-13 NMR CHEMICAL-SHIFTS AND CARBON-PROTON COUPLING-CONSTANTS OF SOME FUROCOUMARINS AND FUROCHROMONES [J].

ELGAMAL, MHA ;

ELEWA, NH ;

ELKHRISY, EAM ;

DUDDECK, H .

PHYTOCHEMISTRY, 1979, 18 (01) :139-143

[8]

GONZALEZ AG, 1977, PHYTOCHEMISTRY, V16, P2033, DOI 10.1016/0031-9422(77)80126-X

[9] DETERMINATION DES CONFIGURATIONS PAR DEDOUBLEMENT PARTIEL .3. ALCOOLS STEROIDES [J].

HOREAU, A ;

KAGAN, HB .

TETRAHEDRON, 1964, 20 (11) :2431-&

[10]

JOHN L, 1978, PHYTOCHEMISTRY, V17, P139

← 1 2 3 →