Cyclopeptides from Sagina japonica (Caryophyllaceae).
Two new cyclic peptides, named sajaponicin C (1) and sajaponicin D (2), were isolated from the whole plants of Sagina japonica (Caryophyllaceae). Their structures were determined as cyclo(Pro(2)-Leu(2)-Tyr-Leu(1)-Phe(1)-Pro(3)-Phe(2)-Pro(1)) (1) and cyclo(Pro(1)-Pro(2)-Pro(3)-Pro(4)-Phe(1)-Gly-Thr-Ser-Phe(2)-Ile-Tyr) (2) on the basis of spectroscopic data, especially by two-dimensional (2D) NMR techniques.
Jia
Ai-qun
AQ
Bioengineering Laboratory, Nanjing University of Science and Technology, Nanjing, Jiangsu, PR China.
Tan
Ning-hua
NH
Zhou
Jun
J
D000595:Amino Acid Sequence; D029748:Caryophyllaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010456:Peptides, Cyclic / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*
D010456:Peptides, Cyclic