Various structural types of nogalamycin congeners and their partial structures, which had been previously synthesized in the course of our synthetic studies on the total syntheses or were originally produced by employing the explored synthetic scheme, were subjected to in vitro cytotoxicity and in vivo antitumor activity assay against P388 munne leukemia. These studies obviously disclosed novel aspects
Total synthesis of novel xanthone antibiotics (±)-cervinomycins A1, and A2
作者:Goverdhan Mehta、Shailesh R. Shah、Yenamandra Venkateswarlu
DOI:10.1016/s0040-4020(01)85666-0
日期:1994.1
A totalsynthesis of novel heptacyclic antibiotics cervinomycin A1 and A2 following a convergent approach is reported. The cornerstone of our strategy was the construction of the central ring D through photochemical electrocyclization. The oxazolo-isoquinolinone fragment (ABC rings) and the xanthone fragment (EFG rings) were assembled through relatively straightforward synthetic protocols and coupled
据报道,采用收敛方法后,新的七环类抗生素cervinomycin A 1和A 2的总合成。我们策略的基石是通过光化学电环化构建中心环D。通过相对简单的合成方案组装恶唑基-异喹啉酮片段(ABC环)和rings吨酮片段(EFG环),并通过Wittig反应偶联以产生并建立关键的光环化反应。我们成功的方法和可以容易地适合于这些有趣抗生素类似物的合成。
Tamura, Yasumitsu; Fukata, Fumio; Tsugoshi, Teruhisa, Chemical and pharmaceutical bulletin, 1984, vol. 32, # 8, p. 3259 - 3262
Total synthesis of cervinomycin A1-trimethyl ether and cervinomycin A2-methyl ether
作者:Goverdhan Mehta、Shailesh R. Shah
DOI:10.1016/s0040-4039(00)93465-8
日期:1991.9
The heptacyclic framework of cervinomycin antibiotics has been constructed through a C + EFG --> CEFG --> CDEFG --> ABCDEFG approach in which the photochemical generation of ring D was a key step.
TAMURA, YASUMITSU;FUKATA, FUMIO;TSUGOSHI, TERUHISA;SASHO, MANABU;NAKAJIMA+, CHEM. AND PHARM. BULL., 1984, 32, N 8, 3259-3262