Search Results - "Valls, Nativitat"

Total Synthesis and Reassignment of Configuration of Aeruginosin 298-A by Valls, Nativitat, López-Canet, Meritxell, Vallribera, Mercè, Bonjoch, Josep

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Studies in the FR901483 tricyclic skeleton synthesis and a new approach to the perhydropyrrolo[2,1-i]indole ring system by Diaba, Faïza, Ricou, Eva, Solé, Daniel, Teixidó, Elisabet, Valls, Nativitat, Bonjoch, Josep

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Biosynthesis and Structure of Aeruginoside 126A and 126B, Cyanobacterial Peptide Glycosides Bearing a 2-Carboxy-6-Hydroxyoctahydroindole Moiety by Ishida, Keishi, Christiansen, Guntram, Yoshida, Wesley Y., Kurmayer, Rainer, Welker, Martin, Valls, Nativitat, Bonjoch, Josep, Hertweck, Christian, Börner, Thomas, Hemscheidt, Thomas, Dittmann, Elke

“…Aeruginosins represent a group of peptide metabolites isolated from various cyanobacterial genera and from marine sponges that potently inhibit different types…”
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Synthesis of β-chloro α-amino acids: (2 S,3 R)- and (2 S,3 S)-3-chloroleucine by Valls, Nativitat, Borregán, Mar, Bonjoch, Josep

“…The same sequence was carried out using (2 R,3 R)-3-hydroxyleucine leading to the epimeric (2 S,3 S)-3-chloroleucine. The first syntheses of (2 S,3 R)- and (2…”
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Synthesis of enantiopure cis-decahydroquinolines from homotyramines by Birch reduction and aminocyclization by Mena, Marisa, Valls, Nativitat, Borregán, Mar, Bonjoch, Josep

“…Birch reduction of homotyramines with a syn-β-amino alcohol unit followed by acid treatment of formed dihydroanisole derivatives gives polysubstituted…”
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Fischer indolization of octahydroindol-6-one derivatives revisited: diastereoisomerization and racemization processes by Borregán, Mar, Bradshaw, Ben, Valls, Nativitat, Bonjoch, Josep

“…Fischer indolization of enantiopure 2-methoxycarbonyl- cis-octahydroindol-6-ones using AcOH as a catalyst induces racemization of the…”
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Syntheses of Both the Putative and Revised Structures of Aeruginosin EI461 Bearing a New Bicyclic α-Amino Acid by Valls, Nativitat, Vallribera, Mercè, Carmeli, Shmuel, Bonjoch, Josep

“…The putative structure of the naturally occurring aquatic peptide aeruginosin EI461 has been prepared from d-tyrosine. A corrected structure for aeruginosin…”
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First Total Syntheses of Aeruginosin 298-A and Aeruginosin 298-B, Based on a Stereocontrolled Route to the New Amino Acid 6-Hydroxyoctahydroindole-2-carboxylic Acid by Valls, Nativitat, López-Canet, Meritxell, Vallribera, Mercè, Bonjoch, Josep

“…The first total syntheses of aeruginosin 298‐A (1) and aeruginosin 298‐B (3) are described. The syntheses of the alternative putative structures 2 and 4 were…”
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Synthesis of Microcin SF608 by Valls, Nativitat, Vallribera, Mercè, López-Canet, Meritxell, Bonjoch, Josep

“…The first total synthesis of aquatic peptide microcin SF608 is described. Coupling of l-Hpla with the dipeptide l-Phe-l-Choi followed by coupling with agmatine…”
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Total Synthesis of (±)-Deethylibophyllidine:  Studies of a Fischer Indolization Route and a Successful Approach via a Pummerer Rearrangement/Thionium Ion-Mediated Indole Cyclization by Bonjoch, Josep, Catena, Juanlo, Valls, Nativitat

“…The total synthesis of (±)-deethylibophyllidine is described, proceeding in eight steps from 4-(methoxyphenyl)ethylamine in 5% overall yield (Scheme ). In…”
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Synthesis of the proposed core of aeruginosins 205: the new α-amino acid (2 S,3a S,6 R,7a S)-2-carboxy-6-chlorooctahydroindole by Valls, Nativitat, Vallribera, Mercè, Font-Bardı́a, Mercè, Solans, Xavier, Bonjoch, Josep

“…The synthesis of enantiomerically pure α-amino acid (2 S,3a S,6 R,7a S)-2-carboxy-6-chlorooctahydroindole ( l-Ccoi) is described. NMR data of l-Ccoi 3 are very…”
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Total Syntheses of (±)-Deethylibophyllidine Using a Crisscross Annulation:  Ring Cleavage of Octahydroindolo[2,3-a]quinolizines Followed by Tandem Cyclizations of Octahydroazecino[5,4-b]indoles by Bonjoch, Josep, Fernàndez, Joan-Carles, Valls, Nativitat

“…The total synthesis of (±)-deethylibophyllidine (1) is described. Three different sequences provide this pentacyclic alkaloid using a common strategy involving…”
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Synthesis of the octahydroindole core of aeruginosins: a new bicyclic α-amino acid by Bonjoch, Josep, Catena, Juanlo, Isábal, Esther, López-Canet, Meritxell, Valls, Nativitat

“…The first synthesis of 6-hydroxyoctahydroindole-2-carboxylic acid derivatives with a cis fusion in the azabicyclic nucleus is described. The synthesis involves…”
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Synthesis of 4-ethyloctahydroindolo[2,3- a]quinolizine-2-carbaldehydes by Bonjoch, Josep, Fernàndez, Joan-Carles, Terricabras, Dolors, Valls, Nativitat

“…The isomerization-cyclization of tetrahydropyridine 7 by AcOH leads to 4-ethyloctahydroindolo[2,3- a]quinolizine-2-carbaldehydes ( 8). When the process is…”
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Synthesis of enantiopure (2 R,3a S,7a S)-2-ethyloctahydroindol-6-one and its fischer indolization by Bonjoch, Josep, Catena, Juanlo, Terricabras, Dolors, Fernàndez, Joan-Carles, López-Canet, Meritxell, Valls, Nativitat

“…A diastereoselective synthesis of (−)-2-ethyloctahydroindol-6-one 12 starting from O- methyl- L-tyrosine 1 is described. The process first involves the…”
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Diastereoselective synthesis of all-cis-perhydropyrrolo[3,2,1-hi]indol-7-one. A building block for the synthesis of D-norpandolane-type alkaloids by Valls, Nativitat, Bonjoch, Josep, Bosch, Joan

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Biosynthetic pathway and structure of aeruginosides 126A and 126B, cyanobacterial peptides bearing a 2-carboxy-6-hydroxyoctahydroindole moiety by Ishida, Keishi, Christiansen, Guntram, Yoshida, Wesley Y., Kurmayer, Rainer, Welker, Martin, Valls, Nativitat, Bonjoch, Josep, Hertweck, Christian, Börner, Thomas, Hemscheidt, Thomas, Dittmann, Elke

“…Aeruginosins represent a group of peptide metabolites isolated from various cyanobacterial genera and from marine sponges that potently inhibit different types…”
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Praziquantel Analogues. II. Synthesis of 4-Oxo-octahydropyrazino[1',2':1,2]pyrido[3,4-b]- and -[4,3-b]indoles by Valls, Nativitat, M. Segarra, V団tor, L用ez, Xavier, Bosch, Joan

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