Shishijimicin A 的简化全合成及其在其类似物的设计、合成和生物学评价中的应用,以及 PhthNSSMe 和相关磺化试剂的实际合成
摘要:
Shishijimicin A 是一种稀有的海洋天然产物,具有很强的细胞毒性,使其成为设计抗体-药物偶联物的潜在有效载荷或先导化合物。在此,我们描述了 shishijimicin A 的改进全合成以及一系列类似物的设计、合成和生物学评价。配备适当的接头连接功能,这些类似物中的许多都表现出极强的细胞毒性,可达到预期目的。在这些研究中开发和采用的合成策略和策略包括改进先前已知和新的磺基化试剂(如 PhthNSSMe 和相关化合物)的制备。
Synthesis of the esperamicin A<sub>1</sub>/calicheamicin γ-trisulphide functionality: thermal stability and reduction
作者:Philip Magnus、Richard T. Lewis、Frank Bennett
DOI:10.1039/c39890000916
日期:——
The bridgehead enone (16) was converted into the allylic trisulphide (22)/(23) in a completely stereospecific manner, and the thermal and reduction chemistry of some allylic trisulphides was examined.
作者:K. C. Nicolaou、Zhaoyong Lu、Ruofan Li、James R. Woods、Te-ik Sohn
DOI:10.1021/jacs.5b05575
日期:2015.7.15
The totalsynthesis of the rare but extremely potent antitumor agent shishijimicin A has been achieved via a convergent strategy involving carboline disaccharide 3 and hydroxy enediyne thioacetate 4.
稀有但极其有效的抗肿瘤剂石狮吉米星 A 的全合成是通过涉及咔啉二糖 3 和羟基烯二炔硫代乙酸酯 4 的收敛策略实现的。
Synthesis of (±)-Calicheamicinone by Two Methods
作者:Derrick L. J. Clive、Yunxin Bo、Yong Tao、Sylvain Daigneault、Yong-Jin Wu、Gérard Meignan
DOI:10.1021/ja980292s
日期:1998.10.1
(E)-3-nitropropenoate to afford ketone 27. This was converted by two routes into (±)-calicheamicinone (1). In the first, modification of the nitro, ester, and allyl substituents gave ketone 38, which reacted stereoselectively with cerium trimethylsilylacetylide to place the acetylene unit syn to the nitrogen function (38 → 39). Further elaboration took the route as far as aldehyde 42. A slightly different series of
Synthesis of a Protected (±)-Calicheamicinone Derivative by Sequential Introduction of Functionality into the Bicyclo[7.3.1]enediyne Core Structure
作者:Philip Magnus、Gregory F. Miknis、Neil J. Press、Didier Grandjean、G. Mark Taylor、John Harling
DOI:10.1021/ja970743t
日期:1997.7.1
The core bicyclo[7.3.0]enediyne 3 has been synthesized from the protected cyclohexane-1,2-dione 6 and enediyne component 9. Conversion of 20 into more highly functionalized enediynes was accomplished by oxidation and amination to give 27. Protection of 27, and conversion into 31, gave on treatment with (MeO)2P(O)CH2CO2Me the lactone 32, which was transformed into the trisulfide 39. All attempts to
Total synthesis of calicheamicin .gamma.1I. 3. The final stages
作者:K. C. Nicolaou、C. W. Hummel、M. Nakada、K. Shibayama、E. N. Pitsinos、H. Saimoto、Y. Mizuno、K. U. Baldenius、A. L. Smith
DOI:10.1021/ja00070a006
日期:1993.8
The first totalsynthesis of calicheamicin γ 1 I (1) has been achieved. The stereoselective glycosidation, joining the appropriately functionalized aglycon 3 with the oligosaccharide fragment 2, was realized uding Schmidt's trichloroacetimidate methodology. Segment 4, equipped with the photolabile 2-nitrobenzyl group at the reducing end, was synthesized using similar chemistry to that applied to the