Other

Ube Industries, Inc.

Sankyo Company, Limited

Keiji Matsunobu

Hiroshi Fujiwara

Nobuhiko Shibakawa

Masahiko Hagihara

Yasushi Takahashi

Tomio Kimura

Keiichi Ito

Keiichi Tabata

Haruo Iwabuchi

Yoshimi Fujihara, Deceased

Etsuro Itoh

Pyrrolopyridazine compounds

Optically active pyrrolopyridazine derivatives

Pyrrolopyridazine derivatives having the general formula. ##STR1## In the above formula, R.sup.1 represents a C.sub.2 -C.sub.6 alkenyl-group, a halogeno-C.sub.2 -C.sub.6 -alkenyl group, a C.sub.6 -C.sub.10 aryl-C.sub.2 -C.sub.6 -alkenyl group, a C.sub.2 -C.sub.6 alkynyl group, a C.sub.3 -C.sub.7 cycloalkyl group, a C.sub.3 -C.sub.7 cycloalkyl-C.sub.1 -C.sub.6 -alkyl group, a C.sub.5 -C.sub.7 cycloalkenyl-C.sub.1 -C.sub.6 -alkyl group or a halogeno-C.sub.1 -C.sub.6 -alkyl group; R.sup.2 and R.sup.3 are the same or different and each represents a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or a C.sub.6 -C.sub.10 aryl group; R.sup.4 represents a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group; R.sup.5 represents a C.sub.6 -C.sub.10 aryl group or a 5-10 membered heteroaryl group comtaining heteroatom(s) selected from nitrogen, oxygen and sulfur;

Pyrrolopyridazine derivatives

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Ube, Japan

Keiji Matsunobu