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Volumn 67, Issue 20, 2002, Pages 6979-6994

Three-component biginelli cyclocondensation reaction using C-glycosylated substrates. Preparation of a collection of dihydropyrimidinone glycoconjugates and the synthesis of C-glycosylated monastrol analogues

Author keywords

[No Author keywords available]

Indexed keywords

ASYMMETRIC INDUCTION;

EID: 0037019968     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo0202076     Document Type: Article
Times cited : (136)

References (71)
  • 1
    • 0034665244 scopus 로고    scopus 로고
    • Passerini three-component and Ugi four-component condensations are the most popular among many other reactions for their wide scope and synthetic utility. For reviews, see: (a) Bienaymé, H.; Hulme, C.; Oddon, G.; Schmitt, P. Chem. Eur. J. 2000, 6, 3321. (b) Dömling, A.; Ugi, I. Angew. Chem., Int. Ed. 2000, 39, 3168.
    • (2000) Chem. Eur. J. , vol.6 , pp. 3321
    • Bienaymé, H.1    Hulme, C.2    Oddon, G.3    Schmitt, P.4
  • 2
    • 0034665244 scopus 로고    scopus 로고
    • Passerini three-component and Ugi four-component condensations are the most popular among many other reactions for their wide scope and synthetic utility. For reviews, see: (a) Bienaymé, H.; Hulme, C.; Oddon, G.; Schmitt, P. Chem. Eur. J. 2000, 6, 3321. (b) Dömling, A.; Ugi, I. Angew. Chem., Int. Ed. 2000, 39, 3168.
    • (2000) Angew. Chem., Int. Ed. , vol.39 , pp. 3168
    • Dömling, A.1    Ugi, I.2
  • 10
    • 0027205552 scopus 로고
    • For a review, see: Kappe, C. O. Tetrahedron 1993, 49, 6937.
    • (1993) Tetrahedron , vol.49 , pp. 6937
    • Kappe, C.O.1
  • 11
    • 2142661678 scopus 로고    scopus 로고
    • note
    • Quite fairly, Biginelli stated (ref3) that his research was inspired by the earlier work of R. Behrend on the urea-ketoester coupling and U. Schiff on the urea-aldehyde coupling.
  • 33
    • 0034519777 scopus 로고    scopus 로고
    • For a survey on this topic with leading references, see: Kappe, C. O. Eur. J. Med. Chem. 2000, 35, 1043.
    • (2000) Eur. J. Med. Chem. , vol.35 , pp. 1043
    • Kappe, C.O.1
  • 41
    • 0035977234 scopus 로고    scopus 로고
    • For a recent report on the synthesis of new guanidine-sugars and leading references to earlier work on these glycoconjugates, see: Lin, P.; Lee, C. L.; Sim, M. M. J. Org. Chem. 2001, 66, 8243.
    • (2001) J. Org. Chem. , vol.66 , pp. 8243
    • Lin, P.1    Lee, C.L.2    Sim, M.M.3
  • 51
    • 0035801820 scopus 로고    scopus 로고
    • It has to be noted that the β-D-configured formyl C-ribofuranoside 5a was erroneously reported (ref 22b) to be the α-isomer. For a revision, see: Dondoni, A.; Formaglio, P.; Marra, A.; Massi, A. Tetrahedron 2001, 57, 7719.
    • (2001) Tetrahedron , vol.57 , pp. 7719
    • Dondoni, A.1    Formaglio, P.2    Marra, A.3    Massi, A.4
  • 53
    • 2142823795 scopus 로고    scopus 로고
    • note
    • The attachment of the sugar moiety to the urea through a methylene bridge was designed in order to ensure higher stability with respect to the N-glycosyl derivative.
  • 57
    • 2142714034 scopus 로고    scopus 로고
    • note
    • The use of catalytic CuCl as described in ref 7f afforded the Biginelli product in much lower yield (ca. 30%). It is likely that the presence of powdered 4-Å molecular sieves, acting as acid sponge, interfered with the action of the heterogeneous promoter.
  • 64
    • 2142766896 scopus 로고    scopus 로고
    • note
    • It has to be noted that the assignment of the opposite configuration with respect to the ref 29d is due to the different substituent priorities.
  • 65
    • 2142718333 scopus 로고    scopus 로고
    • note
    • Compound -17b was prepared by selective debenzylation of the corresponding O-benzyl ester which was in turn obtained by the standard cyclocondensation reaction using benzyl acetoacetate, urea, and the aldehyde 5b (see the Experimental Section).
  • 67
    • 2142703845 scopus 로고    scopus 로고
    • note
    • The phenolic hydroxy group was protected in order to avoid possible transesterification reactions by the O-benzoyl groups.
  • 71
    • 2142699596 scopus 로고    scopus 로고
    • note
    • Ambersep 900 OH was purchased from Fluka. This resin was washed with methanol and dried in vacuo before use.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.