Topic
Sarcococca
About: Sarcococca is a research topic. Over the lifetime, 49 publications have been published within this topic receiving 595 citations.
Papers
TL;DR: After presenting the methodological bases of historical phytogeography (paleochorology), a new paleographic map series is introduced and ten examples of paleochorological analyses, in which the major phases of the development of a group in space and time are documented.
Abstract: After presenting the methodological bases of historical phytogeography (paleochorology; Fig. 1), a new paleographic map series is introduced (Fig. 2). They serve for ten examples of paleochorological analyses, in which the major phases of the development of a group in space and time are documented. In addition to purely tropical taxa (Nypa, Ctenolophon),others which originated in the warm and humid N. Tethyan belt (Bombacaceae p.p., Olacaceae p.p., Symplocos, Alangium, Nepenthes) or which presently occur as eastern N. American/E. Asian disjuncts (Sarcococca and Pachysandra) are discussed (Figs. 3 – 14).Finally, analyses of two very old angiosperm groups with complicated paleochorological patterns (Restionaceae and Ascarina, Chloranthaceae p.p.; Figs. 15 – 16) are presented.
85 citations
TL;DR: In this investigation, development and structure of inflorescences and flowers of representatives of all buxaceous genera were studied comparatively to gain a better understanding of flower structure in Buxaceae and their relationships to basal eudicots.
Abstract: Recent phylogenetic analyses of angiosperms based on molecular and combined molecular and morphological data recognize a grade of basal eudicots situated between the ranunculids and the core eudicots. Buxaceae together with Didymelaceae form a well‐supported clade within this grade. Flowers of representatives of this grade are characterized by a considerable variability in organ number and organ differentiation. In particular, perianth evolution of basal eudicots has been difficult to interpret because of a high diversity in number and form of perianth organs. In this investigation, development and structure of inflorescences and flowers of representatives of all buxaceous genera were studied comparatively to gain a better understanding of flower structure in Buxaceae and their relationships to basal eudicots. Inflorescences of Buxus, Notobuxus, and Styloceras kunthianum are most often botryoids with several lateral male flowers and a terminal female flower. Inflorescences of Pachysandra and sometimes Sar...
70 citations
TL;DR: In this study, the anthetic structure of the gynoecium and androecium of representatives of all genera of Buxaceae were comparatively studied, and observations on the flowering processes and pollination biology were made.
62 citations
TL;DR: From the leaves of Sarcococca coriacea two new steroidal alkaloids, epoxynepapakistamine-A and epoxysarcovagenine-D, were isolated and found to have cholinesterase inhibitory activity when tested for the inhibition of electric eel acetylcholiersterase and horse serum butyrylcholinestersterase.
Abstract: From the leaves of Sarcococca coriacea two new steroidal alkaloids, epoxynepapakistamine-A [(20S)-20-(N-methylamino)-3β-(tigloylamino)-5α-pregna-16α,17α-epoxy-2β,4β-di-O-acetate] (1), and epoxysarcovagenine-D [(20S)-20-(N-methylamino)-3β-(tigloylamino)-5α-pregna-2-en-16α,17α-epoxy-4-one] (2), and two known compounds funtumafrine C [(20S)-20-(N,N-dimethylamino)-5α-pregna-3-one] (3) and N-methylfuntumine (4) were isolated. Their structures were elucidated on the basis of their spectral properties. The compounds 1, 3 and 4 were found to have cholinesterase inhibitory activity when tested for the inhibition of electric eel acetylcholinesterase and horse serum butyrylcholinesterase. They inhibited both enzymes in a concentration dependent fashion.
51 citations
TL;DR: The family Buxaceae consists of four genera, with the desert shrub Simmondsia dubiously included in the family as a fifth genus, and can be ranked as highly mesic to moderately mesic (Buxus, Notobuxus), with a few species in the latter pair of genera notably more mesomorphic in wood construction.
41 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 2 |
| 2019 | 3 |
| 2018 | 1 |
| 2016 | 1 |
| 2015 | 2 |
| 2014 | 1 |