Results 91 to 100 of about 954 (177)

The Raputindoles: Novel Cyclopentyl Bisindole Alkaloids from Raputia simulans

open access: yes, 2016
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).
Alexios-Leandros Skaltsounis (127086)   +4 more
core   +1 more source

Bisindole Alkaloids with Neural Anti-inflammatory Activity from Gelsemium elegans

open access: yes, 2016
Three new trace bisindole alkaloids geleganimines A and B (1, 2) and geleganamide (3) were isolated from the aerial parts of Gelsemium elegans. Their structures were elucidated by spectroscopy, particularly from their carbon–proton coupling constants ...
Shi-Shan Yu (737551)   +9 more
core   +1 more source

Three New Cytotoxic Monoterpenoid Bisindole Alkaloids from Tabernaemontana bufalina

open access: yes, 2018
Three new bisindole alkaloids, 3′-(2-oxopropyl)-19,20-dihydrotabernamine (1), 3′-(2-oxopropyl)-ervahanine B (2), 19,20-dihydrovobparicine (3), and 20 known compounds were isolated from the aerial parts of Tabernaemontana bufalina. The structures of these
You-Sheng Cai   +8 more
core   +1 more source

Qualitative and quantitative evaluation of bisindole usambarane alkaloids in Strychnos usambarensis roots by high performance liquid chromatography diode-array

open access: yes, 1998
peer reviewedA high performance liquid chromatographic method for the simultaneous determination of bisindole usambarane alkaloids from the roots of Strychnos usambarensis using a diode-array detector is proposed, The system, consisting of a RP-8 Select ...
Angenot, Luc   +8 more
core   +1 more source

Studies on the synthesis of bisindole Aspidosperma alkaloids

open access: yes
I. Introduction and Background on Aspidosperma Alkaloids A brief overview of monoterpene indole Aspidosperma alkaloids is discussed. The biosynthesis of the characteristic pentacyclic core from tryptamine and secologanin is summarized.
Pinto, Taylor
core  

Biologically active alkaloids from Alstonia angustiloba / Ku Wai Foong [PDF]

open access: yes, 2011
The alkaloidal content of Malaysian plant, Alstonia angustiloba Miq., was investigated and the results are summarized as below (Table). A total of 20 alkaloids were isolated and characterized, of which, three were new alkaloids, viz., angustilobine C (1),
Ku, Wai Foong
core  

Antiviral glycosidic bisindole alkaloids from the roots of Isatis indigotica

open access: yes, 2015
Seven new glycosidic bisindole alkaloids, isatindigobisindolosides A–G (1–7), were isolated from an aqueous extract of the Isatis indigotica roots. Their structures including absolute configurations were determined by spectroscopic and chemical methods ...
Cheng-Bo Xu (744325)   +8 more
core   +1 more source

Spiroindimicins A–D: New Bisindole Alkaloids from a Deep-Sea-Derived Actinomycete

open access: yes, 2016
A PCR-based screening approach led to the identification of a deep-sea-derived Streptomyces sp. SCSIO 03032 capable of producing new bisindole alkaloids spiroindimicins A–D (1–4). Structural elucidation of these compounds revealed the presence of unusual
Tingting Yang (166111)   +12 more
core   +1 more source

Biologically active indole and bisindole alkaloids from Leuconotis and Kopsia / Gan Chew Yan [PDF]

open access: yes, 2013
Two Malaysian plants viz., Leuconotis griffithii and Kopsia pauciflora, and one fungi strain (Penicillium sp. (CDA p48.3)) were investigated for their alkaloidal content and the results are summarized below (Table). A total of 107 alkaloids were isolated
Gan, Chew Yan
core  

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