Jatavaleridoids A-H, eight new iridoids from the roots and rhizomes of Valeriana jatamansi Jones.

Eight new iridoids, jatavaleridoids A-H (1-8), were isolated from the roots and rhizomes of Valeriana jatamansi. Their structures and absolute configurations were elucidated based on NMR and HRESIMS spectroscopic data, as well as quantum chemical calculation. Structurally, compounds 1-5 and 8 were rare iridoids with long-chain fatty acid esters at C-10.

Valeridoids G - Q, Eleven seco-Iridoids from Valeriana jatamansi and Their Bioactivites.

Eleven new seco-iridoids, valeridoids G-Q (1-6 and 8-12), along with four known products, 9-epi-valtral C (7), desacylbaldrinal (13), 11-methoxyviburtinal (14) and baldrinal (15), were obtained from Valeriana jatamansi. Among them, the new compounds were identified by their NMR, HR-ESI-MS spectroscopic data and ECD calculation. Moreover, valeridoid N and O were a pair of C epimers, whose ether bonds between C-1 and C-3 opened, and new ether bonds formed between C-3 and C-6.

Iridoids and sesquiterpenoids from Valeriana jatamansi and their anti-influenza virus activities.

Twenty-one new iridoids, jatamansidoids A-U (1-12, 21-26, 32, 35 and 36), two new natural ones, jatamansidoids V (37) and W (38), eighteen known ones (13-20, 27-31, 33 and 34), together with three patchoulol-type sesquiterpenoids (39-41), were isolated from the roots and rhizomes of Valeriana jatamansi. Structurally, compounds 1-7 were the first examples of iridoids from V. jatamansi with unique α, β, γ, δ-unsaturated aldehyde fragment between C-11, C-4, C-5, C-9 and C-8; compound 8 was an unprecedented iridoid derivative with a methyl group (Me-10) at C-1, rather than C-8, and its plausible biogenetic pathway was proposed in this paper; compounds 22 and 23 were the first examples of Δ-iridoids simultaneously replaced by oxygen-containing groups at C-3, C-6 and C-7; compound 24 was the first iridoid with both 6,7- and 1,10-epoxy fragments.

The isolation of two new compounds from .

A new norsesquiterpene, wilfordonol E (), and a new lignan, dipsalignan E (), together with a known norsesquiterpene and eleven known lignans were isolated from the roots and rhizomes of . The structures of new compounds were determined by their NMR and HR-ESI-MS spectra. Additionally, some compounds were evaluated for their anti-influenza A virus effects.

Iridoids and bis-iridoids from Valeriana jatamansi and their cytotoxicity against human glioma stem cells.

An undescribed iridoid (valeridoid A) and five undescribed bis-iridoids (valeridoids B-F), along with four known ones, were isolated from the roots and rhizomes of Valeriana jatamansi. Their structures were elucidated based on 1D and 2D NMR, as well as HRESIMS spectroscopic data. In addition, 8,9-didehydro-7-hydroxydolichodial and valeridoid F were found to inhibit the growth of three human glioma stem cells (GSC-3#, GSC-12# and GSC-18#).

A natural compound obtained from selectively inhibits glioma stem cells.

Glioblastoma is one of the most malignant tumors with very poor prognosis. Glioma stem cells (GSCs) occupy a small proportion in glioma, but they are closely associated with radiotherapy and chemotherapy resistance, promoting tumor angiogenesis, hypoxia response, invasion and recurrence. Therefore, GSCs have become a new target for tumor treatment and are used in drug screening.

Bioactive 3,8-Epoxy Iridoids from Valeriana jatamansi.

Twelve 3,8-epoxy iridoids, including four new compounds, jatamanins R-U (1-4), and eight known compounds (5-12), were obtained from the roots and rhizomes of Valeriana jatamansi. The structures were elucidated from analysis of spectroscopic data. The absolute configurations of 1-4 were determined by comparison of experimental and literature ECD spectra.

Onosmanones A and B, two novel quinonoid xanthenes from Onosma paniculatum.

Onosmanones A (1) and B (2), two novel quinonoid xanthenes with two geranyl groups, have been isolated from the whole plants of Onosma paniculatum. Their structures were elucidated on the basis of one- and two-dimensional NMR techniques.

Anti-inflammatory and Anti-HIV Compounds from Swertia bimaculata.

Three new compounds ( - ), including a sesterterpenoid, aspterpenacid C (), with an unusual 5/3/7/6/5 pentacyclic skeleton, together with seven known ones ( - ), were isolated from the ethanol extract of the traditional Chinese medicinal plant Their structures were elucidated on the basis of the methods of spectroscopic NMR, MS, and computational chemistry. The structure of was further confirmed by single-crystal X-ray diffraction analysis. Compounds  -  were tested for activities on the inhibition of nitric oxide production and HIV-1 replication .