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Published on: August 16, 2018
Three new multiflorane-type triterpenes from pumpkin (Cucurbita maxima) seeds.
Takashi Kikuchi1, Mika Takebayashi, Mayumi Shinto
1Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki-shi, Osaka 569-1094, Japan. tanakar@gly.oups.ac.jp
Molecules (Basel, Switzerland)
|May 16, 2013
Summary
Three new compounds from pumpkin seeds show promise for skin lightening and cancer research. These multiflorane-type triterpenes, including compound 3, effectively inhibit melanogenesis with low toxicity.
Area of Science:
- Natural Product Chemistry
- Organic Chemistry
- Pharmacology
Background:
- Cucurbita maxima seeds are a source of bioactive compounds.
- Triterpenoids, including multiflorane-type compounds, possess diverse biological activities.
Purpose of the Study:
- To isolate and characterize new multiflorane-type triterpenes from Cucurbita maxima seeds.
- To evaluate the melanogenesis inhibitory and cytotoxic effects of isolated compounds.
Main Methods:
- Isolation and structural elucidation of compounds using spectroscopic techniques.
- In vitro assays to assess melanogenesis inhibition.
- Cytotoxicity assays against cancer cell lines (HL-60 and P388).
Main Results:
- Three new multiflorane-type triterpenes (1-3) were identified.
- Compounds 3 and 5 demonstrated potent melanogenesis inhibition with low cytotoxicity.
- Compound 2 exhibited single-digit micromolar cytotoxicity against HL-60 and P388 cells.
Conclusions:
- Cucurbita maxima seeds contain novel bioactive triterpenes.
- Compounds 3 and 5 are potential candidates for cosmetic applications targeting hyperpigmentation.
- Compound 2 shows potential for further investigation in anticancer drug discovery.
