protopinen.

Brit.

/ˈprəʊtəpiːn/, U.S.

/ˈproʊdəˌpin/

Origin: A borrowing from German. Etymon: German Protopin.

Etymology: < German Protopin (O. Hesse 1871, in Berichte der Deutsch. Chem. Ges. 4 696) < proto- proto- comb. form + op- (in Opium opium n., in which protopine was first found) + -in -ine suffix⁵. Compare cryptopine n.

Chemistry.

A white crystalline alkaloid present in many plants, esp. of the families Papaveraceae and Fumariaceae.Protopine has a pentacyclic structure. Formula: C₂₀H₁₉NO₅.

ΚΠ

1871 Jrnl. Chem. Soc. 24 1065 Protopine..may be separated easily from the former alkaloid; it forms solid prisms with hydrochloric acid.

1878 Lancet 19 Jan. 91/1 The bitter fluids remaining after the extraction of morphia and codeia—viz., meconidine, codamine, cryptopine, laudanosine, laudanine, larthopine, protopine.

1934 C. C. Steele Introd. Plant Biochem. vi. xx. 223 Sometimes an individual alkaloid may be characteristic of its order, e.g. protopine is widely distributed in the Papaveraceæ and in the allied order Fumariaceæ.

1992 Jrnl. Pharmacy & Pharmacol. 43 667 Osthole, protopine and norathyriol are inhibitors of phosphoinositide breakdown.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	protopine
释义	protopinen. Brit. /ˈprəʊtəpiːn/, U.S. /ˈproʊdəˌpin/ Origin: A borrowing from German. Etymon: German Protopin. Etymology: < German Protopin (O. Hesse 1871, in Berichte der Deutsch. Chem. Ges. 4 696) < proto- proto- comb. form + op- (in Opium opium n., in which protopine was first found) + -in -ine suffix⁵. Compare cryptopine n. Chemistry. A white crystalline alkaloid present in many plants, esp. of the families Papaveraceae and Fumariaceae.Protopine has a pentacyclic structure. Formula: C₂₀H₁₉NO₅. ΚΠ 1871 Jrnl. Chem. Soc. 24 1065 Protopine..may be separated easily from the former alkaloid; it forms solid prisms with hydrochloric acid. 1878 Lancet 19 Jan. 91/1 The bitter fluids remaining after the extraction of morphia and codeia—viz., meconidine, codamine, cryptopine, laudanosine, laudanine, larthopine, protopine. 1934 C. C. Steele Introd. Plant Biochem. vi. xx. 223 Sometimes an individual alkaloid may be characteristic of its order, e.g. protopine is widely distributed in the Papaveraceæ and in the allied order Fumariaceæ. 1992 Jrnl. Pharmacy & Pharmacol. 43 667 Osthole, protopine and norathyriol are inhibitors of phosphoinositide breakdown. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1871
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