127041-77-4Relevant academic research and scientific papers
A highly stereoselective formal synthesis of hapalosin
Kumar, Harish,Reddy, A. Srinivas,Yadav,Reddy, B. V. Subba
, p. 1415 - 1419 (2013/07/26)
A flexible and highly diastereoselective formal synthesis of hapalosin, a cyclodepsipeptide isolated from the blue green alga Hapalosiphon welwitschii and having multidrug-resistance-reversing activity is described. The synthetic route involves the addition of organometallic reagent to N-tert- butanesulfinylimine, Jung nonaldol aldol reaction, and Yamaguchi esterification as key steps. Georg Thieme Verlag Stuttgart · New York.
Selective reductions of oxazolidinones: New protocol for diastereoselective synthesis of vicinal amino alcohols
Reddy, G. Vidyasagar,Rao, G. Venkat,Iyengar
, p. 2653 - 2656 (2007/10/03)
Selective reductions of oxazolidinones using sodium borohydride and their application to the diastereoselective synthesis of vicinal amino alcohols are described.
Eine konvergente, enantioselektive Totalsynthese von Hapalosin: ein Wirkstoff zur Vermeidung resistenter Tumorzellen in Chemotherapie
Ghish, Arun K.,Liu, Wenming,Xu, Yibo,Chen, Zhidong
, p. 73 - 75 (2007/10/03)
Keywords: Chemotherapie; Hapalosin; Naturstoffe; Totalsynthesen
A Novel BF3*OEt2-Catalyzed Annulation of N-Cbz-α-Amino Aldehides with Allyltrimethylsilane. Highly Stereoselective Synthesis of Cis-2,3,5-Trisubstituted Pyrrolidines
Kiyooka, Syun-ichi,Shiomi, Yasuhiro,Kira, Haruhide,Kaneko, Yuichi,Tanimori, Shinji
, p. 1958 - 1960 (2007/10/02)
In the presence of BF3*OEt2 (0.2 molar equiv), the reactions (-10 deg C, CH2Cl2) of N-Cbz-α-amino aldehydes with allyltrimethylsilane produced pyrrolidines in good yields (70-80percent), with high all-cis stereoselectivity at the C-2, C-3, and C-5 positio
Lewis acid-mediated reaction with silyl ketene acetals and allylstannane of the aluminum acetals generated by DIBALH reduction of α-amino acid esters
Kiyooka,Suzuki,Shirouchi,Kaneko,Tanimori
, p. 5729 - 5732 (2007/10/02)
The intermediates generated by DIBALH reduction of α-amino acid esters undergo condensation without racemization with silyl ketene acetals and allylstannane in the presence of Lewis acid to afford the corresponding β-hydroxy esters and homoallylic alcohol
ALUMINUM-MEDIATED ONE-POT CONVERSION OF α-AMINO ACID ESTERS TO THREO 2-AMINO ALCOHOLS WITH HIGH DIASTEREOSELECTIVITY
Kano, Shinzo,Yuasa, Yoko,Yokomatsu, Tsutomu,Shibuya, Shiroshi
, p. 2867 - 2869 (2007/10/02)
Reduction of N-Cbz α-amino acid esters with DIBAl-H, followed by treatment with Grignard reagent in a one-pot manner gave the corresponding threo 2-amino alcohols with high diastereoselectivity without racemization. KEYWORDS 2-amino alcohol; α-amino acid ester; DIBAL-H reduction; α-amino aldehyde; chelation controll; diastereoselective synthesis; one-pot synthesis
