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Journal of The Chemical Society-perkin Transactions 1 | 1974

Terpenoids. Part XXVIII. Total synthesis of enmein

Eiichi Fujita; Masayuki Shibuya; Shigetake Nakamura; Yasumori Okada; Tetsuro Fujita

The total synthesis of enmein (1) is reported. The diol acetal, ent-3β,20-epoxy-3-methoxy-17-norkaurane-6α,16α-diol (3) was used as the important relay compound.


Journal of The Chemical Society, Chemical Communications | 1972

Total synthesis of enmein

Eiichi Fujita; Masayuki Shibuya; Shigetake Nakamura; Yasumori Okada; Tetsuro Fujita

A total synthesis of enmein (1) has been accomplished by a transformation of the previously synthesised relay compound (2).


Chemical & Pharmaceutical Bulletin | 1978

Cyclic Guanidines. I. Synthesis of Hypoglycemic 1-Substituted 2-Imino-1, 3-diazacycloalkanes

Fumiyoshi Ishikawa; Akira Kosasayama; Shigetake Nakamura


Tetrahedron Letters | 1967

The structures of lythranine, lythranidine, and lythramine, novel alkaloids from lythrum anceps makino

Eiichi Fujita; Kaoru Fuji; Kiyoshi Bessho; Akihisa Sumi; Shigetake Nakamura


Chemical & Pharmaceutical Bulletin | 1970

Lythraceous Alkaloids. II. The Structure of O-Methyllythranidine

Eiichi Fujita; Kaoru Fuji; Kiyoshi Bessho; Shigetake Nakamura


Chemical & Pharmaceutical Bulletin | 1972

Terpenoids. XXI. The Structure and Stereochemistry of Isodotricin, a Diterpenoid of Isodon trichocarpus and I. japonicus

Eiichi Fujita; Tetsuro Fujita; Yasumori Okada; Shigetake Nakamura; Masayuki Shibuya


Chemical & Pharmaceutical Bulletin | 1975

Terpenoids. XXXIII. Chemical Conversion of Enmein into Enmelol

Eiichi Fujita; Shigetake Nakamura


ChemInform | 1979

CYCLIC GUANIDINES. I. SYNTHESIS OF HYPOGLYCEMIC 1-SUBSTITUTED 2-IMINO-1,3-DIAZACYCLOALKANES

Fumiyoshi Ishikawa; Akira Kosasayama; Shigetake Nakamura; T. Konno


Archive | 1976

2-imino-1,3-diazacycloalkane derivatives

Kazufumi Abiko; Fumiyoshi Ishikawa; Kinya Kameda; Shigetake Nakamura; Nobuyoshi Ono


ChemInform | 1974

TERPENOIDS PART 28, TOTAL SYNTHESIS OF ENMEIN

Eiichi Fujita; Masayuki Shibuya; Shigetake Nakamura; Yasumori Okada; Tetsuro Fujita

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