raputia praetermissa/alkaloid

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The raputindoles: novel cyclopentyl bisindole alkaloids from Raputia simulans.

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Prijava / prijava

A novel class of bisindole alkaloids is established by the isolation and structural determination of raputindoles A-D (1-4) from the Amazonian plant Raputia simulans Kallunki (Rutaceae). Complete spectroscopic characterization was accomplished by means of NMR spectroscopy and APCI (+) HRMS.

Rare bisindole alkaloids from the Amazonian tree Raputia simulans.

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Prijava / prijava

The stem bark of Raputia simulans (Rutaceae) has been reported to contain simple and dimeric indole alkaloids. Further phytochemical investigation of R. simulans stem bark resulted in the isolation of three new alkaloids. These compounds represent a relatively new category of dimeric indole

Simple indole alkaloids from the neotropical rutaceous tree Raputia simulans.

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Prijava / prijava

The genus Raputia Aubl. comprises 10 neotropical species of the family Rutaceae belonging to the subtribe Cuspariinae. We report herein the investigation of the dichloromethane extract of the stem bark of R. simulans, which has led to the isolation of indole type alkaloids. The isolation procedure

seco-limonoids and quinoline alkaloids from Raputia heptaphylla and their antileishmanial activity.

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A novel seco-limonoid, rel-(1S,5R,9S,7R,8S,9R,10S,11R,13S,14R,15R,17R)-11,19-dihydroxy-7-acetoxy-7-deoxoichangin (raputiolide) (1), and two novel quinolone alkaloids N-methyl-2-phenoxyquinolin-4(1H)-one (heptaphyllone A) (2) and 6-methylbenzofuro[2,3-b]quinolin-4(1H)-one (heptaphyllone B) (3), along

4-Deoxyraputindole C induces cell death and cell cycle arrest in tumor cell lines.

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Prijava / prijava

Several molecules extracted from natural products exhibit different biological activities, such as ion channel modulation, activation of signaling pathways, and anti-inflammatory or antitumor activity. In this study, we tested the antitumor ability of natural compounds extracted from the Raputia

Total Synthesis and Absolute Configuration of Raputindole A.

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Prijava / prijava

The first total synthesis of the bisindole alkaloid raputindole A from the rutaceous plant Raputia simulans is reported. The key step is a Au(I)-catalyzed cyclization that assembles the cyclopenta[f]indole tricycle from a 6-alkynylated indoline precursor. The isobutenyl side chain was installed by

Synthesis of (-)-Dihydroraputindole D via Enantioselective Benzoylation of a 1,3-Diol Intermediate

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Prijava / prijava

The first enantioselective synthesis of a raputindole derivative is reported. The cyclopenta[f]indoline system was assembled by Au(I)-catalyzed cyclization of a propargylic acetate-substituted indoline precursor. The key step is the enantioselective desymmetrizing benzoylation of a prochiral

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