Recent studies on chemical constituents of Ophiorrhiza plants.

J Nat Med

Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8675, Japan.

Published: September 2022

Ophiorrhiza plants (Family Rubiaceae) are known to produce diverse monoterpenoid indole alkaloids including camptothecin with potent antitumor activity. This review contains a summary of recent chemical studies reported over the past 10 years regarding alkaloids (monoterpenoid indole and tetrahydroisoquinoline alkaloids, and cyclopeptide) in Ophiorrhiza plants. In addition, the alkaloid biosynthetic pathways based on their reported structures were proposed.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9411090PMC
http://dx.doi.org/10.1007/s11418-022-01640-3DOI Listing

Publication Analysis

Top Keywords

ophiorrhiza plants
12
monoterpenoid indole
8
studies chemical
4
chemical constituents
4
constituents ophiorrhiza
4
plants ophiorrhiza
4
plants family
4
family rubiaceae
4
rubiaceae produce
4
produce diverse
4

Similar Publications

Maintenance of flower color dimorphism in (Rubiaceae): responses to fluctuating temperatures in a dolomite Karst region.

Front Plant Sci

December 2024

Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Science, Guizhou Normal University, Guiyang, Guizhou, China.

Introduction: Flower color polymorphism is often attributed to selection pressures from Q9 pollinators or other non-pollinator stress factors. Generally, flower color polymorphism demonstrates effective acclimatization linked to either pollinator-mediated selection or pleiotropic effects.

Methods: To test these hypotheses in Ophiorrhiza japonica, we compared pollinator visitation frequencies and plant traits between pink and white morphs in Shibing, a dolomite Karst region recognized as a World Natural Heritage Site.

View Article and Find Full Text PDF

The reproductive strategy of a typical distylous (Rubiaceae), in fragmented habitat.

Front Plant Sci

November 2024

Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, College of Life Science, Guizhou Normal University, Guiyang, China.

Article Synopsis
  • Heterostyly is a genetic variation in plants that enhances cross-pollination and reproductive success, with this study focusing on its occurrence in distylous species in fragmented karst habitats.
  • The research involved measuring floral traits and analyzing secondary metabolites in different flower morphs, alongside various pollination experiments to assess fruit production and pollen behavior.
  • Results showed that intermorph outcrossing led to the highest fruit set, with unique adaptations in both flower morphs, contributing to the species' reproductive sustainability in disturbed environments.
View Article and Find Full Text PDF

There has been no phytochemical or and pharmacological report of the Chinese endemic plant till now. At present, seven structurally diverse compounds were obtained, including six triterpenoids (-) and one anthraquinone (). Interestingly, - furnished three distinct carbon skeletons.

View Article and Find Full Text PDF

, a new species from south-western China and northern Vietnam, is described and illustrated. The new species is characterised by the glabrous surfaces on almost all plant parts, congested inflorescences and broad-ovate to ovate bracts 9-22 × 4-11 mm. It morphologically differs from the closest species, , mainly in most plant parts being glabrous, bracts broad-ovate to ovate, apex acute or sometimes obtuse, corollas inside with a ring of white hairs at the middle and anthers inserted near the middle in long-styled flowers.

View Article and Find Full Text PDF

Unlabelled: Genus has recently emerged as one of the promising sources of Camptothecin (CPT), an antitumour monoterpene indole alkaloid. It possesses CPT in its every part and has a relatively short life span. To determine whether differentiation plays any role in the synthesis and/or accumulation of CPT, the concentration of CPT was analyzed across various tissues of var.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!