7414-92-8Relevant academic research and scientific papers
Total synthesis of antibiotic C104: Benzyne-Furan cycloaddition approach to the angucyclines
Matsumoto, Takashi,Sohma, Tsukasa,Yamaguchi, Hiroki,Kurata, Shin,Suzuki, Keisuke
, p. 7347 - 7360 (1995)
First total synthesis of antibiotic C104 (1), a prototypical member of the angucyclines, was accomplished. Highly regioselective cycloaddition of α-alkoxybenzyne 12 with angularly fused α-siloxyfuran 10 enabled the straightforward construction of the char
A general approach to angucyclines: Synthesis of hatomarubigin A, rubiginone B2, antibiotic X-1488E, 6-hydroxytetrangulol, and tetrangulol
Parker, Kathlyn A,Ding, Qing-Jie
, p. 10249 - 10254 (2000)
Hatomarubigin A was prepared in 41% yield in a single procedure from acyl naphthoquinone 15 and 5-methylcyclohexane-1,3-dione (16). The net reaction consists of Michael addition to an acyl quinone followed by intramolecular aldol condensation. Hatomarubigin A then served as a common intermediate in syntheses of the angucyclinone antibiotics rubiginone B2, antibiotic X-1488E, 6-hydroxytetrangulol, and tetrangulol. (C) 2000 Elsevier Science Ltd.
A general strategy for diverse syntheses of anhydrolandomycinone, tetrangulol, and landomycinone
Sie, Cheng-Jhe,Patteti, Venukumar,Yang, Yi-Ru,Mong, Kwok-Kong Tony
, p. 1885 - 1888 (2018/02/23)
A general synthetic strategy based on a protecting group-promoted CH arylation method was developed for total syntheses of anhydrolandomycinone (1), tetrangulol (2), and landomycinone (3) from the same set of starting materials.
A unified strategy for the syntheses of angucyclinone antibiotics: Total syntheses of tetrangulol, kanglemycin M, X-14881-E, and anhydrolandomycinone
Vanga, Devendar Goud,Kaliappan, Krishna P.
experimental part, p. 2250 - 2259 (2012/06/18)
A unified strategy for the syntheses of angucyclinone antibiotics was developed utilizing sequential intramolecular enyne metathesis, Diels-Alder/aromatization, photooxygenation, and one-pot elimination/ aromatization reactions. The diversity in this sequ
Room-temperature B(OAc)3-promoted diels-alder reaction of juglone with styrenes: Total syntheses of tetrangulol and anhydrolandomycinone
Hsu, Day-Shin,Huang, Jiun-Yi
, p. 2659 - 2666 (2012/06/01)
The Diels-Alder reaction of juglone with various styrenes in the presence of 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) was promoted by B(OAc)3 at room temperature. The reaction proceeded smoothly and gave the products in a good yield and with
Regiochemical control by remote substituents. A direct synthesis of tetrangulol
Kraus,Zhang,Melekhov,Jensen
, p. 521 - 522 (2007/10/03)
Diels-Alder reactions of quinones 4 and 10 exhibit remarkable regioselectivity. This selectivity plus a novel phosphazine-mediated cyclization has led to a six-step synthesis of tretrangulol.
Biomimetic-type synthesis of the racemic non-aromatic angucyclinones of the SF 2315 and SS 228Y types
Krohn, Karsten,Floerke, Ulrich,Freund, Christian,Hayat, Nasir
, p. 1627 - 1632 (2007/10/03)
The biomimetic-type aldol reaction of the tricyclic (E)-configured precursors 6a/b gave the racemic nonaromatic angucycline derivatives 11-13 of the SF 2315 and SS 288Y types. Chelate controlled conditions in the cyclization of 6b led to the regioisomeric product 10.
Synthesis of angucyclines. 8. Biomimetic-type synthesis of rabelomycin, tetrangomycin, and related ring B aromatic angucyclinones
Krohn, Karsten,Boeker, Norbert,Floerke, Ulrich,Freund, Christian
, p. 2350 - 2356 (2007/10/03)
The angucyclinones with aromatic ring B (1a-c and 2a-c) are prepared in a biomimetic-type synthesis by two successive aldol cyclizations starting from the substituted naphthoquinones 12a-c. In both cyclization steps the C-H acidity of the potential nucleophilic centers determines the mode of cyclization under kinetically controlled conditions. The tetrahydroanthraquinones 13a-c/14a-c are hydroxylated at C-4 to the phenolic anthraquinones 16a-c upon treatment with excess NMO.
Total Synthesis of Angucyclines, 4. Synthesis of rac-Tetrangomycin
Krohn, Karsten,Khanbabaee, Karamali
, p. 1109 - 1112 (2007/10/02)
The synthesis of racemic tetrangomycin (11) is reported.In the key step the hexahydrobenzanthraquinone 8 is generated in a regioselective Diels-Alder reaction of diene 5 with bromonaphthoquinone 7.The conversion of 8 into 11 involves only three operati
Biosynthesis of PD 116740: Origins of the carbon, hydrogen, and oxygen atoms and derivation from a 6-deoxybenz[a]anthraquinone
Gould, Steven J.,Cheng, Xing-Chun,Melville, Chris
, p. 1800 - 1804 (2007/10/02)
The benz[a]anthraquinone antibiotic PD 116740 is formed from the regular cyclization of a decaketide intermediate folded in a manner to generate the angular tetracyclic skeleton. The 6-deoxybenz[a]anthraquinone tetrangulol is an intermediate, indicating t
