New 4-methoxybenzoyl derivatives from the ascidian Polycarpa aurata.

Journal of natural products (2002-01-05)
M Wessels, G M König, A D Wright
ABSTRACT

From the hydrophilic extract of the ascidian Polycarpa aurata three new compounds, N-(4-methoxybenzoyl)-N'-methylguanidine (1), butyl 2-(4-methoxyphenyl)-2-oxoacetate (2), and 2-(4-methoxyphenyl)-N-methyl-2-oxoacetamide (3), together with the known compounds methyl 2-(4-methoxyphenyl)-2-oxoacetate (4) and 4-methoxybenzoic acid were isolated. The structures of all isolates were determined from their spectroscopic data (NMR, MS, IR, UV).

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
4-Methoxybenzoic acid, ReagentPlus®, 99%
Supelco
Melting point standard 182-184°C, analytical standard
Sigma-Aldrich
p-Anisic acid, ≥99%, FG
Sigma-Aldrich
p-Anisic acid, natural, 99%, FG

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