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• W2122261212 endingPage "3398" @default.
• W2122261212 startingPage "3387" @default.
• W2122261212 abstract "An excess of base allows the regio- and diastereoselective alkylation at C(4) of the glycine templates 1-methyl(isopropyl)-2,4-dihydro-1H-pyrazino[2,1-b]quinazoline-3,6-diones 9a and 9b without the need for N(2)-protecting groups. While the alkylation of 9a gave exclusively the 1,4-anti-isomers, the isopropyl derivative 9b required much longer reaction times and occurred with lower diastereoselectivity. Fiscalin B 3 was obtained by alkylation of 9b with N-Boc-3-indolylmethyl bromide followed by indole deprotection." @default.
• W2122261212 created "2016-06-24" @default.
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• W2122261212 date "2002-01-01" @default.
• W2122261212 modified "2023-10-17" @default.
• W2122261212 title "1-Alkyl-2,4-dihydro-1H-pyrazino[2,1-b]quinazoline-3,6-diones as glycine templates. Synthesis of Fiscalin B" @default.
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• W2122261212 doi "https://doi.org/10.1016/s0957-4166(02)00027-7" @default.
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