A partir de la resina comercial (Podofilina) de Podophyllum emodi se aisló la podofilotoxina (1). Este compuesto se utilizó como sustrato de partida para sintetizar la 7β-azido-7-desoxipodofilotoxina (2), la N-metil-7-imino-7-desoxipodofilotoxina (3) y N-metil-7-amino-7-desoxi-neo-podofilotoxina (4). Todas las estructuras fueron determinadas mediante el análisis de sus espectros de infrarrojo por transformada de fourier (FT-IR) y resonancia magnética nuclear (RMN) uni- y bi-dimensionales. Se discute brevemente la propuesta del mecanismo para la formación de los derivados nitrogenados (3) y (4).21-25abadjos@ula.vebahsas@ula.vepablochacon@ula.veSemestralThe podophyllotoxin (1) isolated from the commercial resin (Podophyllin) of Podophyllum em...
Several pinacol derivatives of podophyllotoxins bearing different side chains and functions at C-7 w...
Quando o tetrafluoroborato de N-(α-carbometoximetil)-2,4,6-trifenilpiridínio (Ia) foi tratado c...
3-Ethylcarboxy-4-trimethoxyphenyl-6,7-dimethyl-methylenedioxy-1- tetralone 5 and 3-ethyl carboxy-4-t...
Podophyllotoxin and its derivatives are well-studied and widely used in a broad range of therapeutic...
A novel synthesis of podophyllotoxin was carried out in four steps. The key step was reduction of is...
Dissertação de mestrado em Química MedicinalO diaminomaleonitrilo (DAMN), reagente comercial, fez-se...
Bibliography: pages [52]-57.Podophyllotoxin is a molecule with interesting biological activity. Usin...
Na podstawie wcześniejszych badań nad syntezą izomerycznych, trójcyklicznych pochodnych teofiliny, p...
En el presente trabajo de Tesis se sintetizaron derivados de hidratos de carbono conteniendo heteroá...
A reatividade do ilídeo de fósforo estabilizado derivado da difenilciclopropenona, o α-(trifenilfosf...
In an unsuccessful attempt to prepare through several routes the 7-deoxo-7-methylene-homothuriferic ...
Podophyllotoxin and its related lignans have been known andused in crude extracts for hundreds of ye...
Les tétrahydropyrazines et les morpholines sont des hétérocycles à six chaînons comportant deux hété...
The indan analogue 4 of DL-tridemethoxy-beta-apopicropodophyllin 3 has been synthesized starting fro...
1713-1720The benzodioxan analogue of didemethoxy- β-apopicropodophyllin 15 has been synthesized st...
Several pinacol derivatives of podophyllotoxins bearing different side chains and functions at C-7 w...
Quando o tetrafluoroborato de N-(α-carbometoximetil)-2,4,6-trifenilpiridínio (Ia) foi tratado c...
3-Ethylcarboxy-4-trimethoxyphenyl-6,7-dimethyl-methylenedioxy-1- tetralone 5 and 3-ethyl carboxy-4-t...
Podophyllotoxin and its derivatives are well-studied and widely used in a broad range of therapeutic...
A novel synthesis of podophyllotoxin was carried out in four steps. The key step was reduction of is...
Dissertação de mestrado em Química MedicinalO diaminomaleonitrilo (DAMN), reagente comercial, fez-se...
Bibliography: pages [52]-57.Podophyllotoxin is a molecule with interesting biological activity. Usin...
Na podstawie wcześniejszych badań nad syntezą izomerycznych, trójcyklicznych pochodnych teofiliny, p...
En el presente trabajo de Tesis se sintetizaron derivados de hidratos de carbono conteniendo heteroá...
A reatividade do ilídeo de fósforo estabilizado derivado da difenilciclopropenona, o α-(trifenilfosf...
In an unsuccessful attempt to prepare through several routes the 7-deoxo-7-methylene-homothuriferic ...
Podophyllotoxin and its related lignans have been known andused in crude extracts for hundreds of ye...
Les tétrahydropyrazines et les morpholines sont des hétérocycles à six chaînons comportant deux hété...
The indan analogue 4 of DL-tridemethoxy-beta-apopicropodophyllin 3 has been synthesized starting fro...
1713-1720The benzodioxan analogue of didemethoxy- β-apopicropodophyllin 15 has been synthesized st...
Several pinacol derivatives of podophyllotoxins bearing different side chains and functions at C-7 w...
Quando o tetrafluoroborato de N-(α-carbometoximetil)-2,4,6-trifenilpiridínio (Ia) foi tratado c...
3-Ethylcarboxy-4-trimethoxyphenyl-6,7-dimethyl-methylenedioxy-1- tetralone 5 and 3-ethyl carboxy-4-t...