264236-26-2

Upstream product

• 60654-81-1 ethyl L-valylglycinate 
• 2766-17-8 ethyl N-(benzyloxycarbonyl)-L-valylglycinate 
• 479681-20-4 (S)-N⁽¹⁾-(p-methoxybenzyl)-3-isopropylpiperazine-2,5-dione 
• 1149-26-4 (S)-N-(benzyloxycarbonyl)valine 
• 799783-35-0 (3S)-4-(o-azidobenzoyl)-1-p-methoxybenzyl-3-isopropylpiperazine-2,5-dione 
• 264236-36-4 ethyl N-(o-azidobenzoyl)-L-valylglycinate 

Relevant academic research and scientific papers

Influence of N(2)-substitution in the alkylation of (4S)-alkyl-2,4-dihydro- 1H-pyrazino[2,1-b]quinazoline-3,6-diones

1-Alkylation of O(3)-lactim, N(11)-azaenolate dilithium species derived from N(2)-H compounds 1a and 1b and the lithium azaenolates derived from the N(2)-phenyl and N(2)-(1-arylethyl) substituted compounds 2, 3 and 4 is studied. In 1 the trans-diastereose

A New Route toward 4-Substituted Pyrazino[2,1-b]quinazoline-3,6-dione Systems. Total Synthesis of Glyantrypine

Treatment of sodium N-(o-azidobenzoyl)aminoacylglycinates 8 with acetic anhydride afforded 1-acetyl-4-(o-azidobenzoyl)-2,5-piperazinediones 7, with complete retention of the stereochemistry. The intramolecular aza Wittig reactions of compounds 7 in the pr