41017-96-3Relevant articles and documents
Neopeapyran, an unusual furo[2,3b]pyran analogue and turnagainolide C from a soil Streptomyces sp. S2236
Zhou, Hao,Yang, Ya-Bin,Duan, Rong-Ting,Yang, Xue-Qiong,Zhang, Ju-Cheng,Xie, Xiao-Guang,Zhao, Li-Xing,Ding, Zhong-Tao
, p. 1044 - 1047 (2016/07/29)
Neopeapyran (1), an unusual furo[2,3b]pyran analogue, together with a new cyclopeptide, turnagainolide C (2), were isolated from Streptomyces sp. S2236 associated with the rhizosphere soil of Panax notoginseng. The planar structure and relative configuration of neopeapyran (1) were elucidated on the basis of spectroscopic techniques, while the absolute configuration was determined by TDDFT calculation. The absolute configuration of turnagainolide C (2) was determined by partial hydrolysis, together with the advanced Marfey's method and spectroscopic analysis. The antimicrobial activities of these two compounds were also investigated.
Peptides 119. - Peptide Synthesis with N-Carboxy-α-amino Acid Anhydrides
Kircher, K.,Berndt, H.,Zahn, H.
, p. 275 - 284 (2007/10/02)
On reaction of N-carboxy-α-amino acid anhydrides (NCA) with equimolar amounts of aminoacids or excess NCA in potassium borate buffer of pH 10.2 (0 deg C) considerable amounts of homooligomers and homopolymers are formed.If an excess of amino acid is used formation of the above mentioned by-products can be suppressed.The extent of homooligomerization and homopolymerization and hydrolysis occurring during the reaction of NCA under the conditions of peptide synthesis is described.