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Master's Dissertation
DOI
https://doi.org/10.11606/D.46.2012.tde-23042013-141617
Document
Author
Full name
Leonardo de Vasconcelos
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2012
Supervisor
Committee
Di Vitta, Claudio (President)
Cardoso Filho, José Eduardo Pandini
Claro Junior, Nelson Ferreira
Title in Portuguese
Síntese de um fragmento precursor do fármaco Indinavir
Keywords in Portuguese
Aziridina
Ciclização
CTF
Indinavir
L-serina
Piperazina
Síntese orgânica
Abstract in Portuguese
Neste trabalho foram aprofundados nossos estudos para obtenção da (S)-2-terc-butilamida-4-(3-picolil)piperazina, pela abertura da (S)-2-terc-butilcarboxamida-N-p-tosilaziridina seguida de ciclização, em 78% de rendimento, com o triflato de vinildifenilsulfônio. A aziridina foi preparada por um processo de ciclização, em condições de transferência de fase, partindo-se da L-serina, um aminoácido natural de baixo custo. Esta rota sintética rendeu um material que apresenta a mesma estereoquímica S do fragmento piperazínico usado na síntese do Indinavir, podendo vir a constituir uma via alternativa para a obtenção deste fármaco.
Title in English
Synthesis of a precursor fragment of drug Indinavir
Keywords in English
Aziridine
Cyclization
Indinavir
L-serine
Organic synthesis
Piperazine
PTC
Abstract in English
In this work we performed a deeper study for obtaining (S)-2-tert-butylamide-4-(3-picolyl)piperazine by opening (S)-2-tert-butylcarboxamide-N-p-tosylaziridine followed by cyclization, in 78% yield, with diphenylvinylsulfonium trifluoromethanesulfonate. The aziridine were prepared by a cyclization process in phase transfer conditions, starting from L-serine, a low cost amino acid. This synthetic route yielded a material which has the same S piperazinic fragment stereochemistry used in the synthesis of Indinavir, and may constitute an alternative route for obtaining this drug.
 
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Publishing Date
2013-05-16
 
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