various parts of the mangosteen, Garcinia mangostana L. (Clusiaceae), a well-known tropical fruit. Novel xanthonederivatives based on α-mangostin were synthesized and evaluated as anti-cancer agents by cytotoxicity activity screening using 5 human cancer cell lines. Some of these analogs had potent to moderate inhibitory activities. The structure–activity relationship studies revealed that phenol groups
申请人:Chungbuk National University Industry-Academic Cooperation Foundation 충북대학교 산학협력단(220040168226) BRN ▼301-82-16304
公开号:KR20150122946A
公开(公告)日:2015-11-03
본 발명은 신규한 잔톤 유도체 화합물 및 이 화합물을 유효성분으로 포함하는 항암용 조성물에 관한 것이다. 본 발명의 잔톤 유도체 화합물은 다양한 인간 암세포에 대해 매우 우수한 항암 활성을 나타내며 모화합물인 α-망고스틴 화합물과 비교하여 수용성 특성이 크게 개선되어 있다. 본 발명의 잔톤 유도체 화합물은 매우 뛰어난 활성을 갖는 항암약물로 개발될 수 있다.
A new series of mangostin analogs of natural α-mangostin from mangosteen was prepared and their antimycobacterial activity was evaluated in vitro against Mycobacterium tuberculosis H37Ra. The results showed that the monoalkyl tetrahydro α-mangostin analogs displayed increased antimycobacterial activity as compared with the lead natural xanthone, α-mangostin. Among the tested compounds, 6-methoxytetrahydro α-mangostin (16) exhibited the most potent antimycobacterial activity with minimum inhibitory concentration (MIC) of 0.78 µg/mL. The activity of the monoalkylated and monoacylated tetrahydro α-mangostins decreases as the length of carbon chain increases. The methyl ether analog was also active against the multidrug-resistant (MDR) strains with pronounced MICs of 0.78–1.56 µg/mL.
Chemistry of α-mangostin. Studies on the semisynthesis of minor xanthones from <i>Garcinia mangostana</i>
作者:Carlo F. Morelli、Marco Biagiotti、Valeria M. Pappalardo、Marco Rabuffetti、Giovanna Speranza
DOI:10.1080/14786419.2014.986729
日期:2015.4.18
alpha-Mangostin is the major prenylated xanthone from Garcinia mangostana and it has been used also in recent times as starting material for the semisynthetic preparation of various biologically active derivatives. Its structure is characterised by the presence of few functional groups amenable to chemical manipulations, but present in the molecule in multiple instances (three phenolic hydroxyl groups, two prenyl chains and two unsubstituted aromatic carbons). This study represents a first approach to the systematic investigation of the reactivity of alpha-mangostin and describes the semisynthesis of some minor xanthones isolated from G. mangostana.
Novel xanthone antibacterials: Semi-synthesis, biological evaluation, and the action mechanisms
α-Mangostin (α-MG) has demonstrated to display potent activities against Gram-positive bacterial. However, the contribution of phenolic hydroxyl groups of α-MG to the antibacterial activity remains obscure, severely hampering selection of structure modification to develop more potential α-MG-based anti-bacterial derivatives. Herein, twenty-one α-MG derivatives are designed, synthesized and evaluated