Chemistry of trisdecacyclic pyrazine antineoplastics: the cephalostatins and ritterazines.
Chemistry of trisdecacyclic pyrazine antineoplastics: the cephalostatins and ritterazines.
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三十环吡嗪抗肿瘤药的化学:头孢他汀和利特嗪。
DOI:
10.1021/cr800365m
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发表时间:
2009-06
期刊:
影响因子:
62.1
通讯作者:
Fuchs, Philip L.
中科院分区:
文献类型:
--
作者:
Lee, Seongmin;LaCour, Thomas G.;Fuchs, Philip L.
The search for natural products of medicinal significance led the Pettit group to isolate the cephalostatins1 (from the hemichordate worm Cephalodiscus gilchristi, 2 eg, cephalostatin 1 (1)) and the Fusetani team to isolate the ritterazines3 (from the tunicate Ritterella tokioka, eg, ritterazine B (2)), respectively. The cephalostatins and ritterazines are a family of 45 trisdecacyclic bissteroidal pyrazines that display striking cytotoxicity against human tumors (∼ 1 nM in the 2-day NCI 60 cell panel, 4 and in some cases,∼ 10 fM 6-day in the Purdue mini panel5), thereby ranking them among the most potent anticancer agents tested by the NCI. Computer matching at the NCI using the COMPARE program has revealed several additional compounds exhibiting similar profiles to the cephalostatin/ritterazine family. These compounds include OSW-16 (3), a monosteroidal saponin glycoside from the garden perennial Ornithogalum saundersiae (GI50 of 0.8 nM in the NCI 60 cancer cell line), and solamargine7 (4)(from Solanum species) as additional possible candidates for cancer therapy. OSW-1 (3) shows low toxicity to normal human pulmonary cells but encouraging activity against malignant solid tumor cells. Solamargine (4) is an active ingredient of creme Curaderm, claimed to be 100% effective against melanomas in preliminary clinical trials without significant side effects or recurrence of cancer 10 years after treatment (Figure 1). 8 Following Pettit’s seminal report on cephalostatin 1 (1) in 1988, 1 several articles9 have reviewed the structure elucidation, biological activities, and syntheses of cephalostatins. This account will focus on the advances in the syntheses of cephalostatins and ritterazines over the past 15 years (up to∼ July 2008), emphasizing the different strategies adopted, key transformations, and methods for achieving the late construction of the dissymmetric bissteroidal pyrazine framework.
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影响因子:
1.8
作者:
BHANDARU, S;FUCHS, PL
通讯作者:
FUCHS, PL
DOI:
10.1039/a700647k
发表时间:
1997-09-21
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1
影响因子:
--
作者:
Bell, W;Block, MH;Timms, D
通讯作者:
Timms, D
影响因子:
9.7
作者:
CHAM, BE;MEARES, HM
通讯作者:
MEARES, HM
影响因子:
3.6
作者:
FUKUZAWA, S;MATSUNAGA, S;FUSETANI, N
通讯作者:
FUSETANI, N
影响因子:
5.2
作者:
Betancor, C;Freire, R;Suárez, E
通讯作者:
Suárez, E