• 식물분류학회지
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• 제48권2호
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• pp.109-114
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• 2018

The inconsistent relationship between the monogeneric family Cephalotaxaceae and Taxaceae was discussed and the possibility of merging Cephalotaxus within Taxaceae was also reviewed. Our previous reports (cladistics analysis, leaf anatomy and wood anatomy of Taxaceae s.l.) did not find a feasible reason to create a distinction between Cephalotaxus and other Taxad genera (Taxus, Pseudotaxus, Amentotaxus, Torreya and, Austrotaxus) and thus argued for a broader concept of Taxaceae with Cephalotaxus. The monophyly of Taxaceae including Cephalotaxus is described in various contemporary molecular studies, and some of them are in support of the single large family Taxaceae with six genera. Although additional comprehensive studies in the future may perhaps weaken the precise association between Cephalotaxaceae and other Taxad genera, on the basis of recent corroborations, at this moment Taxaceae should be redefined with broad circumscriptions, including Cephalotaxus.

• Natural Product Sciences
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• 제6권1호
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• pp.1-4
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• 2000

Four biflavonoids were isolated from the leaves of Cephalotaxus koreana. Based on spectroscopic data, the compounds were identified as amentoflavone-7',7",4',4"'-tetramethyl ether, sciadopitysin, ginkgetin and bilobetin, respectively.

• 한국자원식물학회지
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• 제13권2호
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• pp.89-94
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• 2000

Cephalotaxus koreana Nakai is endemic species of Korea. Since old days, the fruits have been used as a parasiticide and leaves have been used for a pierced wound by insects. The essential oil components from its aerial parts and stem bark by steam distillation were investigated. Several compounds were characterized by GC-Mass spectra. It was found that the leaves, stembark and flowers contain the compounds of essential oils, 1-octene-3-ol, hexadecanoic acid; $\alpha$-pinene, $\Delta^3$-carene mainly, linalylacetate, $\beta$-cubebene, 3,4-octadine-7-methyl , ferruginol(stem bark) and $\alpha$-pinene mainly, $\beta$-pinene , cyclopropane-1,1-dimethyl-2-(3-methyl-1,3-butadienyl), etc. This Cephalotaxus spp. contains the first components of ferruginol(M.W.286.03, $C_{20}H_{30}O)$ which belong to diterpene.

• Bulletin of the Korean Chemical Society
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• 제31권2호
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• pp.495-496
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• 2010

• KSBB Journal
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• 제15권5호
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• pp.434-437
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• 2000

국내에 자생하는 개비자 나무 (Cephaloti$\alpha$rus korealUl)에서의 알칼로이드 (homoharringtonine, harringtonine와 cephalotaxine)의 함량과 조성을 분석하였다. 알칼로이드의 함량은 지역과 개체군에 따라 큰 차이를 보였는데, 건중량의 11.8 mg/g에서 195.2 mg/g의 범위 내에 존재하였다. 알칼로이드의 함량은 남부 지방에서 자생하는 수목에서 더 높게 존재하는 경향을 보였다. 알칼로이드의 성분 조성은 homoharringtonine이 총 알칼로이드의 40%로 가장 많은 부분을 차지하고, harringtonine (32%), cephaJotaxine (28%) 순이었다. 개비자 나무의 잎에서의 총 알칼로이드와 homoharringtonine 함량은 줄기에 비해 약 2배 정도 높게 존재하였다. 계절에 따라 알칼로이드의 함량이 차이를 보였는데 겨울에 가장 높고, 여름에 가장 적게 함유되어 있었다. 다른 Cephalotax따 종과 비교한 결과 C. koreana는 C. harringtonia 등과 달리 비 교적 높은 homo­h harringtonine를 함유하고 있었다. 이 결과로 볼 때 C. koreana는 homoharringtorune의 생산에 적합한 원료로 사용될 수 있다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2005년도 생물공학의 동향(XVII)
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• pp.566-569
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• 2005

한국산 개비자나무로부터 새로운 개념의 homoharringtonine 분리 및 정제 공정을 개발하였다. 메탄올을 사용한 4회 반복 추출에 의해 biomass로부터 대부분(>99%)의 homoharringtonine을 회수 할 수 있었다. 흡착 공정에서는 활성 백토(active clay)를 사용하여 추출물에 포함되어 있는 식물유래 타르, 왁스 성분을 효과적으로 제거하였다. Silica gel low-pressure chromatography공정을 통해서 순도 52% 이상의 homoharringtonine을 얻었으며, HPLC 공정을 통해 고순도 및 고수율의 homharringtonine을 정제할 수 있었다. 정제된 homoharringtonine의 분자량 및 구조분석을 수행한 결과 표준물질(Homharringtonine)과 동일 물질임을 확인할 수 있었다.

• Archives of Pharmacal Research
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• 제23권2호
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• pp.163-166
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• 2000

The effects of modifiers such as methanol, water diethylamine in methanol (10 v/v %), and diethylamine in water (10 v/v %) were investigated at three different concentrations (1, 5, and 10 v/v %) of the modifiers in supercritical $CO_2$ (SC-$CO_2$) in order to enhance the supercritical fluid extraction (SFE) efficiency of cephalotaxine from Cephalotaxus wilsoniana Leaves. Among the modifiers employed, methanol basified with diethylamine was found to greatly enhance the extraction efficiency relative to any other modifiers employed. The results suggest that cephalotaxine in plant matrices may be readily changed from SC-$CO_2$-insoluble salt to SC-$CO_2$-soluble free base by basified modifiers. In addition, SC-$CO_2$modified with basified methanol could enhance the extraction efficiency of cephalotaxine more than 30% when compared to the conventional organic solvent extraction.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2003년도 생물공학의 동향(XIII)
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• pp.521-524
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• 2003

An effective purification method was developed for producing Homoharringtonine (HHT), to guarantee high purity and yield from Cephalotaxus koreana. This process was a simple and efficient procedure, for the isolation and purification of HHT form the biomass of Cephalotaxus koreana, consisting of extract, adsorbent treatment, precipitation and followed by a chromatography. The extraction, adsorbent treatment and precipitation in pre-purification process allows for rapid and efficient separation of HHT from many compound and dramatically increases the yield and purity of crude HHT for HPLC purification steps compared to alternative processes. This purification processes serves to minimize solvent usage, size, and complexity of the operations for HHT purification.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2005년도 생물공학의 동향(XVI)
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• pp.351-354
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• 2005

한국산 개비자나무로부터 alkaloid계 항암 활성 물질인 Homoharringtonine의 분리 및 정제 공정을 개발하였다. 추출 용매로 메탄올을사용하여 biomass와 mthanol을 1:8의 비율로 분씩 3회 추출할 경우 개비자나무로부터 대부분(>99%)의 Homoharringtonine이 추출됨을 알 수 있었다. 흡착 공정에서는 활성 백토(active clay)를 사용하여 추출물에 포함되어 있는 식물유래 타르, 왁스 성분을 효과적으로 제거하였다. 크로마토그래피 공정을 통해서 52% 이상의 Homoharringtonine을 정제하였다.

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.200.1-200.1
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• 2003

Cephalotaxus koreana Nakai is an endemic species in Korea. The EtOH extract of leaf and branch from the plant showed potent antitumor activity in Teruhiro's method. The tumor volume inhibition ratio value is 25.2% with 20mg/kg in the BDF1 mouse injected LLC cell. We isolated one flavone, sciadopitysin (1), two flavone O-glycosides, quercetin 3-O-${\beta}$-D-glucuronide 6"-ethyl ester (2), apigenin 7-neohesperidoside (3) in comparison with literatures data. Compounds 1-3 showed stronger antitumor activity than Taxol used as positive control. The inhibition ratio values of compounds 1-3 is 34.9, 31.6, 34.0%, respectively, and Taxol is 27.0 % compared with control group.