2012
DOI: 10.1016/j.tetlet.2012.06.115
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Divergent total synthesis of the natural antimalarial marinoquinolines A, B, C, E and unnatural analogues

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Cited by 36 publications
(57 citation statements)
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“…[5] The rare and unique structural feature and interesting bioactive properties of these heterocycles inspired continuous interest in developing efficient protocols for their preparation. [6][7][8][9][10][11] The wellestablished strategy is the formation of central pyridine ring from aryl-substituted pyrroles by Morgen-Walls reaction, [6] PictetÀSpengler reaction, [7] tandem reductive cyclization reaction, [8] Pd-catalyzed imine cyclization, [9] Bischler-Napieralski-type cyclization [10] and areneÀynamide cyclization. [11] Alternatively, methods involving the synthesis of pyrrole ring by Bartoli indolization [12a] or reductive cyclization reaction [12b,c] have also been documented.…”
mentioning
confidence: 99%
“…[5] The rare and unique structural feature and interesting bioactive properties of these heterocycles inspired continuous interest in developing efficient protocols for their preparation. [6][7][8][9][10][11] The wellestablished strategy is the formation of central pyridine ring from aryl-substituted pyrroles by Morgen-Walls reaction, [6] PictetÀSpengler reaction, [7] tandem reductive cyclization reaction, [8] Pd-catalyzed imine cyclization, [9] Bischler-Napieralski-type cyclization [10] and areneÀynamide cyclization. [11] Alternatively, methods involving the synthesis of pyrrole ring by Bartoli indolization [12a] or reductive cyclization reaction [12b,c] have also been documented.…”
mentioning
confidence: 99%
“…42 Como alvos, além de outras lactonas isoladas de P. methysticum, em um total de 4 novos produtos naturais, os autores também prepararam três pironas bioativas isoladas de Polygala sabulosa, 43 etapas-chave. 47 A síntese teve início através da reação de arilação Heck-Matsuda em água pura entre o 3-pirrolina 58 e o sal orto-nitro--benzenodiazônio (59) como passo fundamental. A presença de acetonitrila como solvente levou à decomposição do material.…”
Section: Figura 1 Ciclo Catalítico Geral Da Reação De Heckunclassified
“…1,2 Several synthetic approaches to marinoquinolines A-C and E ( 1-3, 5 ) have been reported, relying on either a key Morgen-Walls or Pictet-Spengler reaction. 3,4 Recently, aplidiopsamine A ( 6 ) was isolated from the Australian ascidian, Aplidiopsis confluata , and represents the first example of the 3 H -pyrrolo[2,3- c ]quinoline moiety linked to an adenine via a methylene bridge, a rare non glycoside adenine conjugate. Thus, 6 represents only the second report of a marine organism producing the 3 H -pyrrolo[2,3- c ]quinoline ring system; importantly, 6 was found to be a potent antimalarial agent, without toxicity to healthy cells, further providing support for synthesis.…”
mentioning
confidence: 99%
“…Interestingly, Correia synthesized 11 , en route to marinoquinolines A-C and E, from advanced materials in five synthetic steps in 47.5% overall yield. 4 We envisioned a more expedited route, and were gratified that a two step sequence from commercial reagents produced 11 . In the event, aniline 14 smoothly underwent a Suzuki coupling with boronate ester 13 to deliver TIPS protected pyrrole 15 , which upon basic hydrolysis generated 11 in 96% yield over the two steps (Scheme 2).…”
mentioning
confidence: 99%
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