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Structures of physalin A and physalin B, 13,14-seco-16,24-cyclo-steroids from Physalis alkekengi var. Francheti.
J Chem Soc Perkin 1. 1970;5:664-70. doi: 10.1039/j39700000664.
J Chem Soc Perkin 1. 1970.
PMID: 5461642
No abstract available.
The structure of physalin T from Physalis alkekengi var. franchetti.
Kawai M, Yamamoto T, Makino B, Yamamura H, Araki S, Butsugan Y, Saito K.
Kawai M, et al. Among authors: butsugan y.
J Asian Nat Prod Res. 2001;3(3):199-205. doi: 10.1080/10286020108041391.
J Asian Nat Prod Res. 2001.
PMID: 11491395
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Cytotoxic activity of physalins possessing modified skeletal structures against HeLa cells.
Makino B, Ohya J, Yamamura H, Araki S, Butsugan Y, Kawai M.
Makino B, et al. Among authors: butsugan y.
Pharmazie. 2003 Jan;58(1):70-1. doi: 10.1002/chin.200323176.
Pharmazie. 2003.
PMID: 12622259
No abstract available.
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Cytotoxic activity of physalins and related compounds against HeLa cells.
Kawai M, Makino B, Yamamura H, Araki S, Butsugan Y, Ohya J.
Kawai M, et al. Among authors: butsugan y.
Pharmazie. 2002 May;57(5):348-50.
Pharmazie. 2002.
PMID: 12061264
No abstract available.
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Crystal structures of Boc-D- and L-Iva-L-Pro-OBzl: unturned conformation of Aib-Pro sequence unaffected by replacement of Me with Et in Aib.
Kawai M, Omori Y, Yamamura H, Butsugan Y, Taga T, Miwa Y.
Kawai M, et al. Among authors: butsugan y.
Biopolymers. 1993 Aug;33(8):1207-12. doi: 10.1002/bip.360330807.
Biopolymers. 1993.
PMID: 8364155
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Tautomerism between exomethylene type physalins and oxymethylene-bridged physalins.
Makino B, Kawai M, Yamamura H, Araki S, Butsugan Y.
Makino B, et al. Among authors: butsugan y.
Pharmazie. 2002 Mar;57(3):215-6.
Pharmazie. 2002.
PMID: 11933856
No abstract available.
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Preparation and opioid activities of N-methylated analogs of [D-Ala2,Leu5]enkephalin.
Kawai M, Fukuta N, Ito N, Kagami T, Butsugan Y, Maruyama M, Kudo Y.
Kawai M, et al. Among authors: butsugan y.
Int J Pept Protein Res. 1990 May;35(5):452-9. doi: 10.1111/j.1399-3011.1990.tb00072.x.
Int J Pept Protein Res. 1990.
PMID: 2165469
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Optical resolution and absolute configuration of N-benzyloxycarbonyl-alpha-alkoxyglycines.
Kawai M, Yamada K, Hosoda K, Omori Y, Kato S, Nagayama N, Masui S, Kamiya M, Yamamura H, Araki S, Butsugan Y.
Kawai M, et al. Among authors: butsugan y.
Chirality. 1999;11(7):561-8. doi: 10.1002/(SICI)1520-636X(1999)11:7<561::AID-CHIR8>3.0.CO;2-1.
Chirality. 1999.
PMID: 10423283
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