Results 131 to 140 of about 2,045 (191)
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Phytochemistry
Melosuadimins A-L (1-12), twelve undescribed monoterpenoid dimeric alkaloids with different subsets of aspidosperma-type alkaloid units were isolated from Melodinus suaveolens.
Jing Wu +4 more
semanticscholar +1 more source
Melosuadimins A-L (1-12), twelve undescribed monoterpenoid dimeric alkaloids with different subsets of aspidosperma-type alkaloid units were isolated from Melodinus suaveolens.
Jing Wu +4 more
semanticscholar +1 more source
Journal of Photochemistry and Photobiology. B: Biology, 2023
A novel croconic acid-bisindole dye CR-630 with a morpholine ring showed good water-solubility and obvious lysosome-targeting. The protonation of the nitrogen atom in the indole and lysosome-targeting of morpholine ring let it exhibit stronger pH ...
Pei-Dan You +7 more
semanticscholar +1 more source
A novel croconic acid-bisindole dye CR-630 with a morpholine ring showed good water-solubility and obvious lysosome-targeting. The protonation of the nitrogen atom in the indole and lysosome-targeting of morpholine ring let it exhibit stronger pH ...
Pei-Dan You +7 more
semanticscholar +1 more source
ChemInform Abstract: Bisindole Alkaloids
ChemInform, 2009AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Toh‐Seok Kam, Yeun‐Mun Choo
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Phytochemistry
Eight mavacurane-aspidospermane bisindole alkaloids, including five undescribed compounds hunzeylmanes A-E (1-5) and their biosynthetic precursors (9, 10a, and 11a), were isolated from the leaves of Hunteria zeylanica. Their structures including absolute
Yong-Yue Wang +3 more
semanticscholar +1 more source
Eight mavacurane-aspidospermane bisindole alkaloids, including five undescribed compounds hunzeylmanes A-E (1-5) and their biosynthetic precursors (9, 10a, and 11a), were isolated from the leaves of Hunteria zeylanica. Their structures including absolute
Yong-Yue Wang +3 more
semanticscholar +1 more source
Organic and biomolecular chemistry
Attempts to directly construct bisindole alkaloids caulerpin and caulersin resulted in the discovery of novel synthetic approaches to a specific bisindole framework with a central troponoid core and an unexpected product-racemosin B.
Yutang Gao +3 more
semanticscholar +1 more source
Attempts to directly construct bisindole alkaloids caulerpin and caulersin resulted in the discovery of novel synthetic approaches to a specific bisindole framework with a central troponoid core and an unexpected product-racemosin B.
Yutang Gao +3 more
semanticscholar +1 more source
Journal of Natural Products
The first total synthesis of one out of four Kikai Island polybrominated C3'-N1 bisindole alkaloids from red alga Laurencia brongniartii is described.
Keisuke Tokushige, Takumi Abe
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The first total synthesis of one out of four Kikai Island polybrominated C3'-N1 bisindole alkaloids from red alga Laurencia brongniartii is described.
Keisuke Tokushige, Takumi Abe
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Synthesis of Marine Sponge Bisindole Alkaloids Dihydrohamacanthins
Organic Letters, 2002[structure: see text] A convergent synthesis of the marine sponge bisindole alkaloids dihydrohamacanthins is described. The synthesis centers on the construction of 3,5- and 3,6-linked pyrazinones and their reduction to the requisite piperazinones with sodium cyanoborohydride.
Fumiko Y, Miyake +2 more
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A Straightforward Access to Specific Bisindole Systems Related to Fascaplysin Alkaloids
Synlett : Accounts and Rapid Communications in Synthetic Organic ChemistryThis study presents a a straightforward synthetic approach to the specific pentacyclic bisindole structures related to fascaplysin alkaloids. The key transformation is an acid-promoted cascade involving a C–N bond formation/Mannich-type cyclization ...
Liang Chen +3 more
semanticscholar +1 more source
Stereochemical and NMR computational study of some natural dimeric bisindole alkaloids
International Journal of Quantum ChemistryThe initial conformational search followed by the optimization of geometric parameters and high‐level calculation of 1H and 13C NMR chemical shifts were carried out for 12 bisindole alkaloids of the Corynanthe‐Strychnos series.
Dmitry A. Grigoriev +3 more
semanticscholar +1 more source
Octacycles and Nonacycles from 3-Hydroxy-2,2′-bisindole
The Journal of Organic Chemistry, 20213-Hydroxy-2,2'-bisindole undergoes acid- and base-mediated dimerization-skeletal rearrangement processes, generating polyheterocyclic ring systems containing up to nine rings. The mechanistic rationale for these reactions is provided, which infers some overlap with the previously reported reactivity of 3',3″-dihydroxytetraindole under analogous ...
Maurycy Prystupa +2 more
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