Six new monoterpenoid indole alkaloids along with four known analogues were isolated
from the aerial part of Gelsemium elegans. Their structures with absolute configurations …

Five new alkaloids, gelseganines A–D (1–4) and humantenine N4‐oxide (5), were isolated
from the stems and leaves of Gelsemium elegans. Compounds 1–4 represent a rare class of …

Seven new indole alkaloids were isolated from the roots of Gelsemium elegans Benth. and
their structures were determined by spectroscopic analysis and chemical transformation …

Two new monoterpenoid oxindole alkaloids, gelsevanillidine (1) having an additional
vanillin residue on gelsenicine-type alkaloid and gelseoxazolidinine (2) possessing an …

Four new gelsedine-type oxindole alkaloids (1–4) were isolated from the leaves and
branches of Gelsemium elegans, together with 10 known alkaloids. The structures of the …

Five previously undescribed monoterpenoid indole alkaloids were isolated from the roots of
Gelsemium elegans. Their structures with absolute configurations were elucidated by …

Six new humantenine-type (1–6) and two new gelsemine-type (7, 8) oxindole alkaloids and
one new indole alkaloid (9) were isolated from the leaves and branches of Gelsemium …

Two new 11‐hydroxy‐substituted gelsedine‐type indole alkaloids, named 11, 14‐
dihydroxygelsenicine (1) and 11‐hydroxygelsenicine (2), together with six known alkaloids …

Five new oxindole alkaloids, gelegamines A–E (1–5), were isolated from the roots of
Gelsemium elegans. Their structures were extensively elucidated on the basis of …

Chemical investigation of the roots of Gelsemium elegans collected in Thailand resulted in
the isolation of the new indole alkaloids, 16-epi-voacarpine, 19-hydroxydihydrogelsevirine …