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New Chemical Constituents from Borreria verticillata (Rubiaceae)

✍ Scribed by Vinicius F. Moreira; Rodrigo R. Oliveira; Leda Mathias; Raimundo Braz-Filho; Ivo J. Curcino Vieira

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
192 KB
Volume
93
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

A phytochemical study on Borreria verticillata has led to the isolation of two novel simple indole alkaloids, 6‐methoxy‐4‐(3‐methylbut‐2‐en‐1‐yl)‐1__H__‐indole, named verticillatine A (1), and 1‐(1__H__‐indol‐6‐yl)‐3‐methylbutan‐1‐one, named verticillatine B (2), one new iridoid, 6′‐O‐(2‐glyceryl)scandoside methyl ester (3), with the glycerol unit linked to a glucose unit, and two known ones, asperuloside (4) and scandoside methyl ester (5). The structures of these compounds were elucidated on the basis of spectroscopic‐data analyses, mainly ^1^H‐ and ^13^C‐NMR, including 2D experiments (^1^H,^1^H‐COSY, NOESY, HMBC, and HMQC), and HR‐ESI‐MS.

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