id	sid	tid	token	lemma	pos
w9504x54r24	1	1	natural	natural	ADJ
w9504x54r24	1	2	products	product	NOUN
w9504x54r24	1	3	display	display	VERB
w9504x54r24	1	4	a	a	DET
w9504x54r24	1	5	vast	vast	ADJ
w9504x54r24	1	6	array	array	NOUN
w9504x54r24	1	7	of	of	ADP
w9504x54r24	1	8	chemical	chemical	ADJ
w9504x54r24	1	9	groups	group	NOUN
w9504x54r24	1	10	and	and	CCONJ
w9504x54r24	1	11	atoms	atom	NOUN
w9504x54r24	1	12	in	in	ADP
w9504x54r24	1	13	different	different	ADJ
w9504x54r24	1	14	spatial	spatial	ADJ
w9504x54r24	1	15	arrangements	arrangement	NOUN
w9504x54r24	1	16	providing	provide	VERB
w9504x54r24	1	17	novel	novel	ADJ
w9504x54r24	1	18	chemical	chemical	NOUN
w9504x54r24	1	19	space	space	NOUN
w9504x54r24	1	20	,	,	PUNCT
w9504x54r24	1	21	and	and	CCONJ
w9504x54r24	1	22	they	they	PRON
w9504x54r24	1	23	remain	remain	VERB
w9504x54r24	1	24	one	one	NUM
w9504x54r24	1	25	of	of	ADP
w9504x54r24	1	26	the	the	DET
w9504x54r24	1	27	best	good	ADJ
w9504x54r24	1	28	sources	source	NOUN
w9504x54r24	1	29	of	of	ADP
w9504x54r24	1	30	potential	potential	ADJ
w9504x54r24	1	31	drug	drug	NOUN
w9504x54r24	1	32	candidates	candidate	NOUN
w9504x54r24	1	33	and	and	CCONJ
w9504x54r24	1	34	leads	lead	NOUN
w9504x54r24	1	35	.	.	PUNCT
w9504x54r24	2	1	we	we	PRON
w9504x54r24	2	2	concentrated	concentrate	VERB
w9504x54r24	2	3	on	on	ADP
w9504x54r24	2	4	two	two	NUM
w9504x54r24	2	5	classes	class	NOUN
w9504x54r24	2	6	of	of	ADP
w9504x54r24	2	7	natural	natural	ADJ
w9504x54r24	2	8	products	product	NOUN
w9504x54r24	2	9	,	,	PUNCT
w9504x54r24	2	10	calyxins	calyxin	NOUN
w9504x54r24	2	11	and	and	CCONJ
w9504x54r24	2	12	3,3'-pyrrolidinyl	3,3'-pyrrolidinyl	NUM
w9504x54r24	2	13	-	-	PUNCT
w9504x54r24	2	14	spirooxindole	spirooxindole	NOUN
w9504x54r24	2	15	natural	natural	ADJ
w9504x54r24	2	16	products	product	NOUN
w9504x54r24	2	17	,	,	PUNCT
w9504x54r24	2	18	that	that	PRON
w9504x54r24	2	19	have	have	VERB
w9504x54r24	2	20	intriguing	intriguing	ADJ
w9504x54r24	2	21	architecture	architecture	NOUN
w9504x54r24	2	22	scaffolds	scaffold	NOUN
w9504x54r24	2	23	and	and	CCONJ
w9504x54r24	2	24	promising	promising	ADJ
w9504x54r24	2	25	biological	biological	ADJ
w9504x54r24	2	26	activity	activity	NOUN
w9504x54r24	2	27	.	.	PUNCT
w9504x54r24	3	1	containing	contain	VERB
w9504x54r24	3	2	all	all	DET
w9504x54r24	3	3	-	-	PUNCT
w9504x54r24	3	4	carbon	carbon	NOUN
w9504x54r24	3	5	tertiary	tertiary	ADJ
w9504x54r24	3	6	centers	center	NOUN
w9504x54r24	3	7	,	,	PUNCT
w9504x54r24	3	8	calyxins	calyxin	NOUN
w9504x54r24	3	9	are	be	AUX
w9504x54r24	3	10	a	a	DET
w9504x54r24	3	11	subclass	subclass	NOUN
w9504x54r24	3	12	of	of	ADP
w9504x54r24	3	13	diarylheptanoid	diarylheptanoid	ADJ
w9504x54r24	3	14	natural	natural	ADJ
w9504x54r24	3	15	products	product	NOUN
w9504x54r24	3	16	.	.	PUNCT
w9504x54r24	4	1	inspired	inspire	VERB
w9504x54r24	4	2	by	by	ADP
w9504x54r24	4	3	the	the	DET
w9504x54r24	4	4	capability	capability	NOUN
w9504x54r24	4	5	and	and	CCONJ
w9504x54r24	4	6	advantages	advantage	NOUN
w9504x54r24	4	7	of	of	ADP
w9504x54r24	4	8	titanocene	titanocene	ADJ
w9504x54r24	4	9	chemistry	chemistry	NOUN
w9504x54r24	4	10	to	to	PART
w9504x54r24	4	11	construct	construct	VERB
w9504x54r24	4	12	carbon−carbon	carbon−carbon	NUM
w9504x54r24	4	13	bonds	bond	NOUN
w9504x54r24	4	14	,	,	PUNCT
w9504x54r24	4	15	we	we	PRON
w9504x54r24	4	16	sought	seek	VERB
w9504x54r24	4	17	to	to	PART
w9504x54r24	4	18	develop	develop	VERB
w9504x54r24	4	19	a	a	DET
w9504x54r24	4	20	titanocene	titanocene	NOUN
w9504x54r24	4	21	-	-	PUNCT
w9504x54r24	4	22	catalyzed	catalyze	VERB
w9504x54r24	4	23	method	method	NOUN
w9504x54r24	4	24	to	to	PART
w9504x54r24	4	25	access	access	VERB
w9504x54r24	4	26	calyxin	calyxin	NOUN
w9504x54r24	4	27	diarylheptanoids	diarylheptanoid	NOUN
w9504x54r24	4	28	.	.	PUNCT
w9504x54r24	5	1	we	we	PRON
w9504x54r24	5	2	developed	develop	VERB
w9504x54r24	5	3	a	a	DET
w9504x54r24	5	4	catalytic	catalytic	ADJ
w9504x54r24	5	5	protocol	protocol	NOUN
w9504x54r24	5	6	for	for	ADP
w9504x54r24	5	7	the	the	DET
w9504x54r24	5	8	synthesis	synthesis	NOUN
w9504x54r24	5	9	of	of	ADP
w9504x54r24	5	10	all	all	DET
w9504x54r24	5	11	-	-	PUNCT
w9504x54r24	5	12	carbon	carbon	NOUN
w9504x54r24	5	13	tertiary	tertiary	ADJ
w9504x54r24	5	14	centers	center	NOUN
w9504x54r24	5	15	that	that	PRON
w9504x54r24	5	16	allows	allow	VERB
w9504x54r24	5	17	for	for	ADP
w9504x54r24	5	18	the	the	DET
w9504x54r24	5	19	mild	mild	ADJ
w9504x54r24	5	20	generation	generation	NOUN
w9504x54r24	5	21	of	of	ADP
w9504x54r24	5	22	a	a	DET
w9504x54r24	5	23	propargyl	propargyl	NOUN
w9504x54r24	5	24	organometallic	organometallic	ADJ
w9504x54r24	5	25	that	that	PRON
w9504x54r24	5	26	proceeds	proceed	VERB
w9504x54r24	5	27	with	with	ADP
w9504x54r24	5	28	a	a	DET
w9504x54r24	5	29	high	high	ADJ
w9504x54r24	5	30	degree	degree	NOUN
w9504x54r24	5	31	of	of	ADP
w9504x54r24	5	32	regioselectivity	regioselectivity	NOUN
w9504x54r24	5	33	in	in	ADP
w9504x54r24	5	34	the	the	DET
w9504x54r24	5	35	carbonyl	carbonyl	ADJ
w9504x54r24	5	36	addition	addition	NOUN
w9504x54r24	5	37	event	event	NOUN
w9504x54r24	5	38	.	.	PUNCT
w9504x54r24	6	1	our	our	PRON
w9504x54r24	6	2	protocol	protocol	NOUN
w9504x54r24	6	3	utilizes	utilize	VERB
w9504x54r24	6	4	a	a	DET
w9504x54r24	6	5	combination	combination	NOUN
w9504x54r24	6	6	of	of	ADP
w9504x54r24	6	7	catalytic	catalytic	ADJ
w9504x54r24	6	8	titanocene	titanocene	NOUN
w9504x54r24	6	9	and	and	CCONJ
w9504x54r24	6	10	stoichiometric	stoichiometric	ADJ
w9504x54r24	6	11	zn	zn	PROPN
w9504x54r24	6	12	dust	dust	NOUN
w9504x54r24	6	13	to	to	PART
w9504x54r24	6	14	facilitate	facilitate	VERB
w9504x54r24	6	15	the	the	DET
w9504x54r24	6	16	metallation	metallation	NOUN
w9504x54r24	6	17	of	of	ADP
w9504x54r24	6	18	readily	readily	ADV
w9504x54r24	6	19	prepared	prepared	ADJ
w9504x54r24	6	20	propargylic	propargylic	ADJ
w9504x54r24	6	21	acetates	acetate	NOUN
w9504x54r24	6	22	.	.	PUNCT
w9504x54r24	7	1	containing	contain	VERB
w9504x54r24	7	2	all	all	DET
w9504x54r24	7	3	-	-	PUNCT
w9504x54r24	7	4	carbon	carbon	NOUN
w9504x54r24	7	5	quaternary	quaternary	ADJ
w9504x54r24	7	6	spirocenters	spirocenter	NOUN
w9504x54r24	7	7	,	,	PUNCT
w9504x54r24	7	8	3,3'-pyrrolidinyl	3,3'-pyrrolidinyl	NUM
w9504x54r24	7	9	-	-	PUNCT
w9504x54r24	7	10	spirooxindole	spirooxindole	NOUN
w9504x54r24	7	11	cores	core	NOUN
w9504x54r24	7	12	are	be	AUX
w9504x54r24	7	13	found	find	VERB
w9504x54r24	7	14	in	in	ADP
w9504x54r24	7	15	many	many	ADJ
w9504x54r24	7	16	spirooxindole	spirooxindole	ADJ
w9504x54r24	7	17	products	product	NOUN
w9504x54r24	7	18	and	and	CCONJ
w9504x54r24	7	19	exhibits	exhibit	VERB
w9504x54r24	7	20	a	a	DET
w9504x54r24	7	21	range	range	NOUN
w9504x54r24	7	22	of	of	ADP
w9504x54r24	7	23	biological	biological	ADJ
w9504x54r24	7	24	activity	activity	NOUN
w9504x54r24	7	25	.	.	PUNCT
w9504x54r24	8	1	our	our	PRON
w9504x54r24	8	2	approach	approach	NOUN
w9504x54r24	8	3	focuses	focus	VERB
w9504x54r24	8	4	on	on	ADP
w9504x54r24	8	5	assembling	assemble	VERB
w9504x54r24	8	6	the	the	DET
w9504x54r24	8	7	quaternary	quaternary	ADJ
w9504x54r24	8	8	carbon	carbon	NOUN
w9504x54r24	8	9	spirocenter	spirocenter	NOUN
w9504x54r24	8	10	in	in	ADP
w9504x54r24	8	11	a	a	DET
w9504x54r24	8	12	single	single	ADJ
w9504x54r24	8	13	,	,	PUNCT
w9504x54r24	8	14	convergent	convergent	ADJ
w9504x54r24	8	15	approach	approach	NOUN
w9504x54r24	8	16	through	through	ADP
w9504x54r24	8	17	two	two	NUM
w9504x54r24	8	18	sequential	sequential	ADJ
w9504x54r24	8	19	bond	bond	NOUN
w9504x54r24	8	20	formations	formation	NOUN
w9504x54r24	8	21	.	.	PUNCT
w9504x54r24	9	1	we	we	PRON
w9504x54r24	9	2	envisioned	envision	VERB
w9504x54r24	9	3	this	this	PRON
w9504x54r24	9	4	occurring	occur	VERB
w9504x54r24	9	5	through	through	ADP
w9504x54r24	9	6	a	a	DET
w9504x54r24	9	7	[	[	PUNCT
w9504x54r24	9	8	4	4	NUM
w9504x54r24	9	9	+	+	NUM
w9504x54r24	9	10	1]-cycloaddition	1]-cycloaddition	NUM
w9504x54r24	9	11	pathway	pathway	NOUN
w9504x54r24	9	12	.	.	PUNCT
w9504x54r24	10	1	sequential	sequential	ADJ
w9504x54r24	10	2	bond	bond	NOUN
w9504x54r24	10	3	formations	formation	NOUN
w9504x54r24	10	4	for	for	ADP
w9504x54r24	10	5	the	the	DET
w9504x54r24	10	6	constructing	construct	VERB
w9504x54r24	10	7	quaternary	quaternary	ADJ
w9504x54r24	10	8	carbon	carbon	NOUN
w9504x54r24	10	9	center	center	NOUN
w9504x54r24	10	10	from	from	ADP
w9504x54r24	10	11	the	the	DET
w9504x54r24	10	12	kukhtin	kukhtin	PROPN
w9504x54r24	10	13	-	-	PUNCT
w9504x54r24	10	14	ramirez	ramirez	PROPN
w9504x54r24	10	15	redox	redox	ADJ
w9504x54r24	10	16	condensation	condensation	NOUN
w9504x54r24	10	17	of	of	ADP
w9504x54r24	10	18	1,2	1,2	PROPN
w9504x54r24	10	19	-	-	PUNCT
w9504x54r24	10	20	dicarbonyls	dicarbonyls	ADJ
w9504x54r24	10	21	and	and	CCONJ
w9504x54r24	10	22	trivalent	trivalent	ADJ
w9504x54r24	10	23	phosphorus	phosphorus	NOUN
w9504x54r24	10	24	were	be	AUX
w9504x54r24	10	25	examined	examine	VERB
w9504x54r24	10	26	.	.	PUNCT
w9504x54r24	11	1	this	this	DET
w9504x54r24	11	2	method	method	NOUN
w9504x54r24	11	3	was	be	AUX
w9504x54r24	11	4	applied	apply	VERB
w9504x54r24	11	5	in	in	ADP
w9504x54r24	11	6	the	the	DET
w9504x54r24	11	7	synthesis	synthesis	NOUN
w9504x54r24	11	8	of	of	ADP
w9504x54r24	11	9	bis	bis	ADJ
w9504x54r24	11	10	-	-	PUNCT
w9504x54r24	11	11	spirocyclopropyl	spirocyclopropyl	NOUN
w9504x54r24	11	12	oxindoles	oxindole	NOUN
w9504x54r24	11	13	,	,	PUNCT
w9504x54r24	11	14	which	which	PRON
w9504x54r24	11	15	show	show	VERB
w9504x54r24	11	16	promising	promise	VERB
w9504x54r24	11	17	cytotoxicity	cytotoxicity	NOUN
w9504x54r24	11	18	towards	towards	ADP
w9504x54r24	11	19	human	human	ADJ
w9504x54r24	11	20	breast	breast	NOUN
w9504x54r24	11	21	and	and	CCONJ
w9504x54r24	11	22	brain	brain	NOUN
w9504x54r24	11	23	cancer	cancer	NOUN
w9504x54r24	11	24	cell	cell	NOUN
w9504x54r24	11	25	lines	line	NOUN
w9504x54r24	11	26	.	.	PUNCT
w9504x54r24	12	1	we	we	PRON
w9504x54r24	12	2	also	also	ADV
w9504x54r24	12	3	evaluated	evaluate	VERB
w9504x54r24	12	4	various	various	ADJ
w9504x54r24	12	5	nitrogen	nitrogen	NOUN
w9504x54r24	12	6	containing	contain	VERB
w9504x54r24	12	7	1,3	1,3	NUM
w9504x54r24	12	8	-	-	PUNCT
w9504x54r24	12	9	heterodiene	heterodiene	ADJ
w9504x54r24	12	10	components	component	NOUN
w9504x54r24	12	11	for	for	ADP
w9504x54r24	12	12	the	the	DET
w9504x54r24	12	13	construction	construction	NOUN
w9504x54r24	12	14	of	of	ADP
w9504x54r24	12	15	3,3'-pyrrolidinyl	3,3'-pyrrolidinyl	NUM
w9504x54r24	12	16	-	-	PUNCT
w9504x54r24	12	17	spirooxindole	spirooxindole	NOUN
w9504x54r24	12	18	cores	core	NOUN
w9504x54r24	12	19	,	,	PUNCT
w9504x54r24	12	20	and	and	CCONJ
w9504x54r24	12	21	aryl	aryl	ADJ
w9504x54r24	12	22	imines	imine	NOUN
w9504x54r24	12	23	in	in	ADP
w9504x54r24	12	24	the	the	DET
w9504x54r24	12	25	presence	presence	NOUN
w9504x54r24	12	26	of	of	ADP
w9504x54r24	12	27	bf3oet2	bf3oet2	PROPN
w9504x54r24	12	28	facilitated	facilitate	VERB
w9504x54r24	12	29	addition	addition	NOUN
w9504x54r24	12	30	of	of	ADP
w9504x54r24	12	31	the	the	DET
w9504x54r24	12	32	phosphonium	phosphonium	NOUN
w9504x54r24	12	33	enolates	enolate	NOUN
w9504x54r24	12	34	followed	follow	VERB
w9504x54r24	12	35	by	by	ADP
w9504x54r24	12	36	n	n	NOUN
w9504x54r24	12	37	-	-	PUNCT
w9504x54r24	12	38	alkylation	alkylation	NOUN
w9504x54r24	12	39	to	to	PART
w9504x54r24	12	40	give	give	VERB
w9504x54r24	12	41	the	the	DET
w9504x54r24	12	42	corresponding	corresponding	ADJ
w9504x54r24	12	43	aziridines	aziridine	NOUN
w9504x54r24	12	44	in	in	ADP
w9504x54r24	12	45	modest	modest	ADJ
w9504x54r24	12	46	yields	yield	NOUN
w9504x54r24	12	47	.	.	PUNCT
w9504x54r24	13	1	we	we	PRON
w9504x54r24	13	2	demonstrated	demonstrate	VERB
w9504x54r24	13	3	the	the	DET
w9504x54r24	13	4	use	use	NOUN
w9504x54r24	13	5	of	of	ADP
w9504x54r24	13	6	diazooxindoles	diazooxindole	NOUN
w9504x54r24	13	7	in	in	ADP
w9504x54r24	13	8	a	a	DET
w9504x54r24	13	9	rh(ii)-catalyzed	rh(ii)-catalyze	VERB
w9504x54r24	13	10	,	,	PUNCT
w9504x54r24	13	11	formal	formal	ADJ
w9504x54r24	13	12	[	[	PUNCT
w9504x54r24	13	13	4	4	NUM
w9504x54r24	13	14	+	+	NUM
w9504x54r24	13	15	1]-cycloaddition	1]-cycloaddition	NUM
w9504x54r24	13	16	toward	toward	ADP
w9504x54r24	13	17	the	the	DET
w9504x54r24	13	18	construction	construction	NOUN
w9504x54r24	13	19	of	of	ADP
w9504x54r24	13	20	spirooxindole	spirooxindole	PROPN
w9504x54r24	13	21	pyrrolones	pyrrolone	NOUN
w9504x54r24	13	22	employing	employ	VERB
w9504x54r24	13	23	vinyl	vinyl	NOUN
w9504x54r24	13	24	isocyanates	isocyanate	NOUN
w9504x54r24	13	25	as	as	ADP
w9504x54r24	13	26	1,3	1,3	NUM
w9504x54r24	13	27	-	-	PUNCT
w9504x54r24	13	28	heterodiene	heterodiene	ADJ
w9504x54r24	13	29	surrogates	surrogate	NOUN
w9504x54r24	13	30	.	.	PUNCT
w9504x54r24	14	1	the	the	DET
w9504x54r24	14	2	method	method	NOUN
w9504x54r24	14	3	exhibits	exhibit	VERB
w9504x54r24	14	4	good	good	ADJ
w9504x54r24	14	5	tolerance	tolerance	NOUN
w9504x54r24	14	6	to	to	ADP
w9504x54r24	14	7	a	a	DET
w9504x54r24	14	8	diverse	diverse	ADJ
w9504x54r24	14	9	array	array	NOUN
w9504x54r24	14	10	of	of	ADP
w9504x54r24	14	11	functional	functional	ADJ
w9504x54r24	14	12	groups	group	NOUN
w9504x54r24	14	13	and	and	CCONJ
w9504x54r24	14	14	substitution	substitution	NOUN
w9504x54r24	14	15	patterns	pattern	NOUN
w9504x54r24	14	16	across	across	ADP
w9504x54r24	14	17	each	each	DET
w9504x54r24	14	18	component	component	NOUN
w9504x54r24	14	19	,	,	PUNCT
w9504x54r24	14	20	and	and	CCONJ
w9504x54r24	14	21	unsaturated	unsaturated	ADJ
w9504x54r24	14	22	spiro	spiro	NOUN
w9504x54r24	14	23	-	-	PUNCT
w9504x54r24	14	24	γ	γ	NOUN
w9504x54r24	14	25	-	-	PUNCT
w9504x54r24	14	26	lactams	lactam	NOUN
w9504x54r24	14	27	are	be	AUX
w9504x54r24	14	28	amenable	amenable	ADJ
w9504x54r24	14	29	to	to	ADP
w9504x54r24	14	30	further	further	ADJ
w9504x54r24	14	31	synthetic	synthetic	ADJ
w9504x54r24	14	32	manipulations	manipulation	NOUN
w9504x54r24	14	33	pertinent	pertinent	ADJ
w9504x54r24	14	34	to	to	PART
w9504x54r24	14	35	target	target	VERB
w9504x54r24	14	36	directed	direct	VERB
w9504x54r24	14	37	synthesis	synthesis	NOUN
w9504x54r24	14	38	.	.	PUNCT
w9504x54r24	15	1	the	the	DET
w9504x54r24	15	2	intermediacy	intermediacy	NOUN
w9504x54r24	15	3	of	of	ADP
w9504x54r24	15	4	a	a	DET
w9504x54r24	15	5	cyclopropyl	cyclopropyl	PROPN
w9504x54r24	15	6	isocyanate	isocyanate	NOUN
w9504x54r24	15	7	enables	enable	VERB
w9504x54r24	15	8	ring	ring	NOUN
w9504x54r24	15	9	expansion	expansion	NOUN
w9504x54r24	15	10	to	to	ADP
w9504x54r24	15	11	the	the	DET
w9504x54r24	15	12	corresponding	corresponding	ADJ
w9504x54r24	15	13	5	5	NUM
w9504x54r24	15	14	-	-	PUNCT
w9504x54r24	15	15	membered	membere	VERB
w9504x54r24	15	16	n	n	NOUN
w9504x54r24	15	17	-	-	PUNCT
w9504x54r24	15	18	heterocycle	heterocycle	NOUN
w9504x54r24	15	19	to	to	PART
w9504x54r24	15	20	occur	occur	VERB
w9504x54r24	15	21	under	under	ADP
w9504x54r24	15	22	comparably	comparably	ADV
w9504x54r24	15	23	milder	mild	ADJ
w9504x54r24	15	24	conditions	condition	NOUN
w9504x54r24	15	25	than	than	ADP
w9504x54r24	15	26	previously	previously	ADV
w9504x54r24	15	27	established	establish	VERB
w9504x54r24	15	28	photochemical	photochemical	ADJ
w9504x54r24	15	29	and	and	CCONJ
w9504x54r24	15	30	thermal	thermal	ADJ
w9504x54r24	15	31	rearrangements	rearrangement	NOUN
w9504x54r24	15	32	of	of	ADP
w9504x54r24	15	33	cyclopropylimines	cyclopropylimine	NOUN
w9504x54r24	15	34	.	.	PUNCT
w9504x54r24	16	1	through	through	ADP
w9504x54r24	16	2	the	the	DET
w9504x54r24	16	3	use	use	NOUN
w9504x54r24	16	4	of	of	ADP
w9504x54r24	16	5	a	a	DET
w9504x54r24	16	6	chiral	chiral	NOUN
w9504x54r24	16	7	rhodium(ii)-catalyst	rhodium(ii)-catalyst	NOUN
w9504x54r24	16	8	,	,	PUNCT
w9504x54r24	16	9	enantioselective	enantioselective	ADJ
w9504x54r24	16	10	cyclopropanation	cyclopropanation	NOUN
w9504x54r24	16	11	of	of	ADP
w9504x54r24	16	12	diazooxindole	diazooxindole	PROPN
w9504x54r24	16	13	and	and	CCONJ
w9504x54r24	16	14	vinyl	vinyl	NOUN
w9504x54r24	16	15	isocyanate	isocyanate	NOUN
w9504x54r24	16	16	was	be	AUX
w9504x54r24	16	17	achieved	achieve	VERB
w9504x54r24	16	18	,	,	PUNCT
w9504x54r24	16	19	and	and	CCONJ
w9504x54r24	16	20	through	through	ADP
w9504x54r24	16	21	further	further	ADJ
w9504x54r24	16	22	functionalization	functionalization	NOUN
w9504x54r24	16	23	by	by	ADP
w9504x54r24	16	24	hydrogenation	hydrogenation	NOUN
w9504x54r24	16	25	and	and	CCONJ
w9504x54r24	16	26	hydrosilylation	hydrosilylation	NOUN
w9504x54r24	16	27	reduction	reduction	NOUN
w9504x54r24	16	28	protocols	protocol	NOUN
w9504x54r24	16	29	the	the	DET
w9504x54r24	16	30	chiral	chiral	ADJ
w9504x54r24	16	31	spirooxindole	spirooxindole	PROPN
w9504x54r24	16	32	pyrrolone	pyrrolone	PROPN
w9504x54r24	16	33	was	be	AUX
w9504x54r24	16	34	accessed	access	VERB
w9504x54r24	16	35	.	.	PUNCT
w9504x54r24	17	1	preliminary	preliminary	ADJ
w9504x54r24	17	2	investigation	investigation	NOUN
w9504x54r24	17	3	into	into	ADP
w9504x54r24	17	4	palladium	palladium	NOUN
w9504x54r24	17	5	-	-	PUNCT
w9504x54r24	17	6	catalyzed	catalyze	VERB
w9504x54r24	17	7	[	[	PUNCT
w9504x54r24	17	8	4	4	NUM
w9504x54r24	17	9	+	+	NUM
w9504x54r24	17	10	1]-cycloaddition	1]-cycloaddition	NUM
w9504x54r24	17	11	to	to	PART
w9504x54r24	17	12	provide	provide	VERB
w9504x54r24	17	13	3,3'-pyrrolidinyl	3,3'-pyrrolidinyl	NUM
w9504x54r24	17	14	-	-	PUNCT
w9504x54r24	17	15	spirooxindole	spirooxindole	NOUN
w9504x54r24	17	16	cores	core	NOUN
w9504x54r24	17	17	is	be	AUX
w9504x54r24	17	18	also	also	ADV
w9504x54r24	17	19	reported	report	VERB
w9504x54r24	17	20	herein	herein	ADV
w9504x54r24	17	21	.	.	PUNCT